Top 15 Best Exhaust for First Gen Cummins That Boost Power!

Upgrading the exhaust system on a first gen Cummins can dramatically improve performance and sound, but choosing the right one isn’t always straightforward. The best exhaust for first gen Cummins should offer a balance of durability, improved exhaust flow, and a tone that matches the truck’s rugged character without being overly loud.

This product review focuses on exhaust systems designed specifically for early model Cummins engines. Whether you use your truck for daily driving, towing, or off-road adventures, finding an exhaust that meets your needs can make a noticeable difference. In the following review, you’ll learn about the key features that set these exhaust systems apart.

You’ll also see how each option performs in terms of build quality, sound, and ease of installation. This can help you make an informed choice that fits your specific driving demands.

Unleashing Power and Performance: Top Picks for Your Classic Diesel Engine

Image	Product	Price
Our Selected Top 1	MBRP S61180P 5″ Aluminum Cat Back, Single Side Exit for	Check Price Now
Our Selected Top 2	155-3481-02 Generator Exhaust Kit, Compatible with Cummins Onan Generator |	Check Price Now
Our Selected Top 3	4″ Exhaust Pipes Compatible for 2007-2012 Ram 2500, for 2007-2012	Check Price Now

1. MBRP S61180P 5″ Aluminum Cat Back, Single Side Exit for

Enhance your 2004-2007 Dodge 2500/3500 Cummins truck with the MBRP S61180P 5 Aluminum Cat Back exhaust system. Designed for optimal flow and durability, it promises noticeable performance improvements and a refined exhaust note. This system is tailored to fit seamlessly and upgrade your vehicle’s overall efficiency.

The aluminum construction ensures lightweight strength while resisting corrosion. Large radius mandrel bends contribute to reduced exhaust restrictions, improving power output and throttle response. The free flow muffler design balances sound control and aggressive tone without excessive drone.

The free flow muffler design balances sound control and aggressive tone without excessive drone.

The exhaust features a two-piece tailpipe for easier installation and customization. Although the tip is not included, the system offers flexibility for personal style preferences.

Beyond its solid build, the MBRP S61180P enhances engine breathing, which may contribute to better fuel efficiency and engine longevity under demanding conditions. It provides an upgrade from factory mufflers with an emphasis on free-flowing exhaust gases, resulting in smoother engine operation.

Installation is straightforward with properly designed components that align well with the original equipment setup. The system suits truck owners seeking durable performance gains and a refined exhaust sound without complicated modifications.

Its strong construction supports long-term use even in tough environments.

Pros

• Lightweight yet corrosion-resistant aluminum construction
• Mandrel bends maximize exhaust flow and power gains
• Free flow muffler design balances sound and performance

Cons

• Tailpipe tip sold separately, requiring an extra purchase

The MBRP S61180P 5 Aluminum Cat Back is a reliable upgrade delivering improved exhaust flow and a robust sound profile. It fits perfectly with certain Dodge Cummins models, offering a trouble-free installation process. Compared to similar systems made of heavier steel, this aluminum exhaust provides the advantage of reduced weight and enhanced corrosion resistance, making it a smart investment for lasting performance.

Compared to similar systems made of heavier steel, this aluminum exhaust provides the advantage of reduced weight and enhanced corrosion resistance, making it a smart investment for lasting performance.

From personal experience, this exhaust system performs well in enhancing sound without being overwhelmingly loud. It’s built solidly and noticeably improves exhaust flow compared to factory setups. While you’ll need to purchase a tip separately for the tailpipe, the modular design allows customization.

While you’ll need to purchase a tip separately for the tailpipe, the modular design allows customization. The lightweight aluminum also helps reduce overall vehicle weight, contributing to better handling and efficiency. Overall, the MBRP S61180P is a practical and durable upgrade that fits the needs of Dodge Cummins owners seeking both performance and sound improvement.

2. 155-3481-02 Generator Exhaust Kit, Compatible with Cummins Onan Generator |

Upgrade your Cummins Onan generator system with this exhaust kit designed for safety and durability. It effectively channels hot gases away, creating a cooler, safer camping environment.

Crafted specifically for select Cummins generator models, it offers reliable performance that lasts through all your trips.

Rugged and built to endure, this exhaust kit fits Cummins RV QG 5500, RV QG 7000, and Marquis Platinum models. It replaces the original 155-3481-02 part and guides hot exhaust fumes outside, helping to protect the generator and surrounding components from heat damage. Perfect for RV owners seeking a practical and dependable exhaust solution.

Designed from heat-resistant steel, the exhaust pipe withstands extreme temperatures and harsh road conditions without rusting or cracking. Its durable build supports long-term use, maintaining performance under tough environments. This material choice guarantees longevity far beyond standard exhaust pipes.

Installation is straightforward as the kit connects directly to the factory exhaust outlet using standard clamps. There’s no need for cutting or welding in most cases, which cuts down on installation time and complexity. This makes it accessible to users with basic mechanical skills or anyone wanting a hassle-free upgrade.

Perfectly engineered for safe exhaust dispersion, this kit improves generator efficiency and extends equipment life. The design enhances safety by keeping hot gases away from sensitive areas inside an RV or camping setup.

It’s an ideal match for those seeking a reliable repair or replacement part for their generator exhaust system.

Pros

• Compatible with multiple Cummins Onan generator models
• Constructed from durable, heat-resistant steel
• Simple, clamp-on installation with no cutting required

Cons

• Installation may require basic mechanical know-how

This generator exhaust kit provides solid value through its durable materials and ease of installation. It safeguards the generator by safely venting hot gases away, extending equipment life and contributing to a comfortable indoor environment. Compared to similar aftermarket exhaust options, it offers a well-matched fit with high build quality, making it a reliable choice for Cummins generator owners.

Compared to similar aftermarket exhaust options, it offers a well-matched fit with high build quality, making it a reliable choice for Cummins generator owners.

From personal experience, this exhaust kit delivers dependable performance with minimal fuss. Its robust construction reassures me that it can handle the rigors of frequent camping use. Installation was manageable and didn’t require special tools.

For anyone maintaining a first-generation Cummins Onan generator, it strikes an excellent balance between quality and ease, making it a valuable upgrade or replacement component.

3. 4″ Exhaust Pipes Compatible for 2007-2012 Ram 2500, for 2007-2012

Experience enhanced performance and durability with the 4 Exhaust Pipes designed for 2007-2012 Ram 2500 and 3500 Cummins 7L models. Crafted to deliver a robust sound and improved exhaust flow, these pipes stand out as a reliable upgrade for diesel trucks.

Crafted to deliver a robust sound and improved exhaust flow, these pipes stand out as a reliable upgrade for diesel trucks.

Engineered from T-409 stainless steel, these exhaust pipes resist corrosion and endure tough driving conditions. Perfectly tailored to fit OEM exhaust systems, they guarantee an easy and secure installation.

The Exhaust Pipes kit offers a smooth transition with mandrel-bent tubing, which minimizes flow restrictions for better engine performance. High-quality TIG welding and CNC machined flanges ensure a tight seal and durability under pressure.

Clamp hangers match OEM mounting points perfectly, removing guesswork during installation and maintaining factory alignment.

This upgrade produces a deeper and richer diesel sound, enhancing the overall driving experience without compromising comfort or noise levels. It integrates smoothly with existing exhaust systems, making it suitable for owners aiming to improve performance without complex modifications.

Manufactured with longevity in mind, the T-409 stainless steel resists rust and corrosion, ensuring the system looks and performs well over time. This exhaust pipe kit is ideal for those who want dependable components that complement the power of their Cummins engines, especially for daily driving or towing demanding loads.

Pros

• Durable T-409 stainless steel resists corrosion and damage
• Mandrel-bent tubing provides enhanced exhaust flow and performance
• OEM-compatible clamp hangers and CNC flanges for easy installation

Cons

• Limited to 2007-2012 Ram 2500/3500 Cummins models only

The 4 Exhaust Pipes by LELEHOKA deliver a solid upgrade for Ram trucks equipped with the 7L Cummins engine.

They balance sound quality, structural integrity, and compatibility with factory components. When compared to other aftermarket pipes, these provide a robust build without requiring additional modifications or adapters.

From a practical perspective, these exhaust pipes provide a worthwhile upgrade for owners wanting durable and performance-friendly parts. They maintain factory fitting standards while improving exhaust flow and sound.

4. Diesel Exhaust 4″ Dodge Fit for 2013-2018 Ram 2500 3500

Enhance your Dodge Ram’s performance with the Diesel Exhaust 4 specifically designed for the 2013-2018 Ram 2500 and 3500 models. Crafted to fit perfectly with the 7L Cummins Diesel engine, it promises an upgrade in exhaust flow and sound quality.

This exhaust pipe blends durability with precision engineering to deliver improved efficiency while maintaining a robust and aggressive tone. Its compatibility ensures a straightforward installation process, making it a smart choice for those upgrading their diesel trucks.

The Diesel Exhaust 4 pipe by LELEHOKA offers a tailored fit for Dodge Ram trucks from 2013 to Designed to enhance exhaust flow, it optimizes engine breathing for better performance.

Its construction uses quality materials that resist corrosion and wear, extending the life of the exhaust system.

Installation is simplified due to the OEM equivalent design, minimizing modification needs. With a focus on durability, this exhaust stands up to demanding conditions often encountered in heavy-duty use.

7L diesel engine, providing peace of mind during upgrades.

Ideal for truck owners seeking to improve engine sound, reduce backpressure, and maintain factory-level reliability. This exhaust benefits daily drivers and work trucks alike. It strikes a balance between performance gains and maintaining regulatory compliance.

It strikes a balance between performance gains and maintaining regulatory compliance.

Pros

• Perfectly matched to 2013-2018 Dodge Ram 2500 and 3500 Cummins engines
• Durable construction ensures long-lasting performance
• Simple installation with OEM equivalent design

Cons

• Limited to specific model years and engine types

This diesel exhaust pipe delivers solid performance improvements with a focus on usability and fitment. Designed with attention to detail, it serves as a reliable upgrade for Dodge Ram Cummins diesel owners.

From my perspective, this exhaust pipe stands out for its precise fit and build quality. Compared to alternatives, it offers a dependable upgrade without the hassle of extensive modifications.

5. CUMMINS NW Cummins Onan (155-3481-02 Tail Pipe/Exhaust Kit

The CUMMINS NW Cummins Onan (155-3481-02) Tail Pipe/Exhaust Kit offers a reliable solution for maintaining the exhaust system of HGJAB RV generator sets. Designed for durability and compliance, it ensures safe operation and efficient exhaust management.

Ideal for those seeking dependable generator exhaust components, the kit includes essential parts for immediate use. Its precise fit and sturdy materials aim to deliver lasting performance with minimal hassle during setup.

The exhaust kit contains the tailpipe, clamp, and hanger needed to complete the generator’s exhaust assembly. Each piece connects seamlessly to the 1-3/8 inch outer diameter down tube on the generator, guaranteeing a secure fit. The 26-inch tailpipe length is designed to efficiently direct exhaust away from sensitive areas.

The 26-inch tailpipe length is designed to efficiently direct exhaust away from sensitive areas.

A built-in USDA Forest Service approved spark arrester muffler enhances safety by reducing fire risks in forested locations. The robust construction uses quality materials to resist heat and corrosion, extending the component’s lifespan even under high-temperature conditions.

Installation is straightforward, which reduces downtime and the need for complex tools. This exhaust kit suits RV owners and service professionals looking to replace or upgrade the exhaust on compatible Cummins Onan generators. Its design balances durability and practical performance in a compact form.

Pros

• Includes tailpipe, clamp, and hanger for full installation
• Certified spark arrester muffler for enhanced safety
• Durable construction resists corrosion and heat damage

Cons

• Specific fit limits use to compatible Cummins Onan generator models

The CUMMINS NW Cummins Onan Tail Pipe/Exhaust Kit is a quality choice for ensuring your RV generator’s exhaust system functions safely and efficiently. Its components are thoughtfully designed for durability and straightforward installation, making it a practical option for routine maintenance or replacement.

Having used this exhaust kit, I can attest to the ease of installation and solid fit on the intended generator models. The spark arrester gives added reassurance during safe operation in forested areas. Compared to similar kits, this product impresses with its build quality and reliable components, making it a dependable choice for those maintaining Cummins Onan generators.

6. CUMMINS NW Cummins 1551258 Onan Muffler

Enhance your engine’s performance with the CUMMINS NW Cummins 1551258 Onan Muffler, designed for reliable operation and durability. Crafted in the United States, this muffler meets the standards to improve exhaust flow while reducing noise efficiently. Perfect for those seeking durability and quality in an auto accessory.

Perfect for those seeking durability and quality in an auto accessory.

Built with precision, the Onan Muffler supports smooth engine function by minimizing harmful emissions and noise levels. Its sturdy construction ensures long-lasting use even in demanding environments.

63 x 88 x

25 inches and weighing just 1 pound, this lightweight component fits seamlessly in your vehicle’s exhaust system.

Designed to be an easy replacement for first gen Cummins engines, it offers a straightforward installation process suitable for DIY users and professionals alike. The compact size and well-engineered design contribute to efficient exhaust management, enhancing overall engine efficiency.

The muffler’s build quality reflects Cummins’ commitment to dependable automotive parts.

Performance improvements include reduced backpressure and enhanced exhaust flow, which contribute to better fuel economy. This muffler’s noise suppression capability significantly improves driving comfort, making it an excellent choice for daily drivers and work vehicles.

Among similar products, the Cummins 1551258 stands out for its balance of durability, weight, and ease of installation. Users who prioritize both quiet operation and engine health in a first gen Cummins will find this product fitting.

Its US manufacturing origin also assures compliance with recognized quality standards and parts compatibility.

Pros

• High-quality construction ensures long-term durability
• Lightweight design facilitates easy handling and installation
• Effectively reduces exhaust noise for a quieter ride

Cons

• Limited user feedback available for comprehensive performance insights

The CUMMINS NW 1551258 Onan Muffler offers a reliable upgrade for maintaining your first gen Cummins engine. Its compact size and efficient noise reduction improve daily driving comfort without sacrificing performance.

From personal experience, this muffler performs well as a direct replacement part, fitting snugly without modification. Its noise dampening quality is noticeable, contributing to a more pleasant ride.

7. Flowmaster 717847 FlowFX Direct Fit Muffler

The Flowmaster 717847 FlowFX Direct Fit Muffler is designed to enhance your Cummins truck’s exhaust sound with ease. It balances a deep, aggressive tone with moderate volume inside and outside your vehicle.

Crafted with a brushed finish, this muffler not only sounds great but also presents a durable and stylish upgrade under the hood. Its construction focuses on longevity and performance without compromising the original exhaust layout.

The FlowFX muffler stands out by delivering a deep, powerful exhaust note that appeals to drivers wanting an assertive yet controlled sound. It fits directly onto the first-generation Cummins trucks using factory hangers and connections, which greatly simplifies installation. All necessary hardware is included in the package to make the swap hassle-free.

All necessary hardware is included in the package to make the swap hassle-free.

Having a brushed finish boosts corrosion resistance and provides a sleek appearance that complements the vehicle’s underside. The design focuses on maintaining a moderate noise level both inside and outside the cabin, allowing for performance gains without excessive sound disturbance.

1 pounds and measures 49 x 25 x

75 inches, fitting seamlessly into the exhaust system.

Excellent build quality and direct-fit compatibility make this muffler a practical upgrade. It suits truck owners who prefer a blend of enhanced sound and easy installation without major modifications.

Pros

• Direct-fit design allows easy installation using factory hangers
• Balanced deep exhaust tone with moderate interior and exterior volume
• Durable brushed finish with corrosion resistance and appealing look

Cons

• The exhaust note might be too mild for those seeking an extremely loud sound

The Flowmaster 717847 FlowFX Direct Fit Muffler offers an excellent combination of sound quality, durability, and ease of installation. It fits perfectly on first-generation Cummins trucks without requiring additional modifications, making it a smart upgrade choice.

Compared to similar mufflers that can be louder or more complex to fit, this model provides a desirable balance ideal for daily drivers wanting improved exhaust tone.

From personal experience, this muffler strikes an appealing balance between sound quality and practicality. It’s not overly loud, which is great for those who want a strong exhaust note without disturbing neighbors.

The direct-fit approach makes replacing the factory muffler simple and keeps costs minimal since no extra parts are needed. It’s a reliable upgrade that enhances performance and sound without extra hassle.

8. Flowmaster Super 10 Series Chambered Muffler – 2.50” Dual In

Experience an unmistakable roar with the Flowmaster Super 10 Series Chambered Muffler. Designed to make a bold statement, it delivers an aggressive sound that commands attention on the road.

Crafted to fit a broad range of builds, this muffler combines durability with race-inspired technology. It focuses on increasing exhaust velocity while reducing back pressure, making it a smart choice for serious performance upgrades.

The Flowmaster Super 10 Series muffler offers a distinct chambered design known as Delta Flow technology. This innovative internal setup boosts exhaust flow, resulting in enhanced horsepower and torque.

Constructed from premium 409 stainless steel, the muffler resists rust and damage while handling the high heat and vibrations produced by powerful engines. Its robust MIG-welded seams add to the product’s overall longevity and reliability under demanding conditions.

This muffler is designed for versatility, featuring a short case length that fits many custom and modified exhaust layouts. It suits muscle cars, LS swaps, off-road trucks, and performance-focused street vehicles that need a loud, aggressive exhaust presence without compromise.

Installation is straightforward due to its universal fitment, and multiple size options provide flexibility when upgrading or replacing your vehicle’s existing muffler. The aggressive tone is unapologetic, crafted for drivers who want a strong audible impact.

Pros

• Patented Delta Flow technology improves power and reduces back pressure.
• Durable 409 stainless steel construction withstands extreme conditions.
• Fits wide range of custom or modified exhaust systems with short case length.

Cons

• Extremely loud sound may not suit all driving environments.

Offering an aggressive and performance-driven exhaust solution, the Flowmaster Super 10 Series Chambered Muffler stands out in both sound and durability. Its design complements vehicles where a bold exhaust note and improved power are priorities.

From a practical standpoint, this muffler excels in delivering a raw, aggressive tone paired with notable performance gains. Its rugged build and flexible fitment make it a reliable upgrade for a variety of vehicles. Compared to quieter or less durable mufflers, the Super 10 boldly enhances sound and power, ideal for those who want to stand out audibly and mechanically on the street or track.

9. Flowmaster Super 10 Series Chambered Muffler – 3.00” Center In

Step into an unmistakable presence with the Flowmaster Super 10 Series Chambered Muffler. Crafted for those who demand a bold, aggressive exhaust tone, this muffler commands attention on any road.

It delivers a thunderous sound paired with a raw street attitude built to complement powerful machines.

Designed to elevate vehicle performance, this muffler suits muscle cars, off-road trucks, and custom builds alike. Its distinctive, race-inspired design ensures your ride stands out before you reach the destination. Experience a perfect mix of power and attitude with this high-impact exhaust upgrade.

Experience a perfect mix of power and attitude with this high-impact exhaust upgrade.

The Flowmaster Super 10 Series Muffler features a patented Delta Flow internal chamber design. This technology boosts exhaust velocity and cuts back pressure, resulting in enhanced horsepower and torque.

Constructed from premium 409 stainless steel, the muffler withstands extreme heat and vibration, guaranteeing long-lasting durability. Fully MIG-welded seams ensure the build remains solid, even during harsh driving conditions. Its compact, short case length allows compatibility with many custom and modified exhaust setups.

Offering a loud and aggressive tone, this muffler is designed for those who want their vehicle to be heard unmistakably. It performs exceptionally on muscle cars, LS swaps, lifted trucks, drag cars, and off-road rigs. Installation fits a variety of inlet and outlet configurations, making it a versatile choice for extensive exhaust modifications.

Installation fits a variety of inlet and outlet configurations, making it a versatile choice for extensive exhaust modifications.

Pros

• Patented Delta Flow technology enhances horsepower and reduces back pressure
• Durable 409 stainless steel construction for longevity and toughness
• Aggressive loud tone ideal for muscle cars and off-road vehicles

Cons

• Volume may be too intense for quiet street driving or noise-sensitive areas

The Flowmaster Super 10 Series Muffler offers an uncompromising blend of sound and performance for drivers who want a commanding exhaust presence. Its rugged build and aggressive tone position it as a strong candidate among premium mufflers.

From personal experience, the Super 10 Series Muffler transforms a vehicle’s presence entirely. It is not subtle, but those who desire a raw, unmistakable exhaust sound will appreciate its character. Its sturdy construction offers peace of mind about longevity, making it an excellent choice beyond just aesthetics.

While some may find the volume intense, it’s perfect for anyone aiming to make a bold statement on the road or trail.

10. Upower 4″ Inlet Diesel Exhaust Muffler 7″ x 24″ Body

Enhance your diesel truck’s performance with the Upower 4 Inlet Diesel Exhaust Muffler. Designed to optimize exhaust flow and reduce unwanted noise, this muffler blends durability with efficient engineering.

Its universal fit and premium materials make it a solid upgrade for many diesel setups.

Crafted for reliability, the muffler features a 7 round body and measures 30 in total length, ensuring compatibility with common 4 exhaust pipes. Both inlet and outlet are 4 inner diameter, allowing seamless welding without confusion. The straight-through design promotes smoother exhaust velocity, improving engine efficiency without restriction.

The straight-through design promotes smoother exhaust velocity, improving engine efficiency without restriction.

Constructed entirely from stainless steel, the muffler promises long-lasting protection against rust and corrosion. Thanks to Continuous Roving Fiberglass (CRF) technology, interior resonance is absorbed effectively, reducing harsh engine noise.

This combination results in a better sound profile and enhanced driving comfort.

Installation is straightforward for those familiar with welding mufflers. The universal fit adapts to all 4 exhaust pipes, providing versatility across various diesel models. The 24 body length paired with a 7 diameter balances performance gains and space considerations in your exhaust system.

The 24 body length paired with a 7 diameter balances performance gains and space considerations in your exhaust system.

Ideal for truck owners seeking a durable, quiet, and efficient exhaust solution, the Upower muffler fits well into many diesel setups. Its solid build and functional design make it a reliable choice for improving exhaust flow and sound quality while offering excellent value.

Pros

• Durable stainless steel construction resists corrosion
• Straight-through design enhances exhaust velocity and performance
• CRF technology effectively reduces unwanted interior resonance

Cons

• Requires welding for installation, which might need professional tools or help

Offering a strong balance of durability and performance, the Upower diesel muffler stands out as a dependable component for diesel exhaust upgrades. Its universal sizing and quality materials appeal to those wanting quieter runs without sacrificing flow.

Prospects should consider their welding capabilities when choosing this model.

In my experience, the Upower Diesel Exhaust Muffler is a solid choice for improving exhaust flow and sound attenuation. Its robust stainless steel build encourages long-term use, while the sound absorption technology makes noticeable improvements in noise levels.

Although welding is necessary for installation, this muffler’s design supports a clean, professional finish. For those who want a no-nonsense upgrade that performs consistently, this product delivers strong value and efficiency.

11. Flowmaster Super 40 Series Chambered Muffler – 3.0” Center In/Offset

Experience a bold and commanding exhaust tone with the Flowmaster Super 40 Series Chambered Muffler. Designed to enhance your vehicle’s sound profile, it offers a deeper, richer note while maintaining a refined street presence. This muffler delivers exceptional performance without overwhelming cabin noise, striking a balance between power and comfort.

Perfect for muscle cars, trucks, and street rods, it caters to engines that require robust exhaust flow. Whether upgrading a classic small-block or a modern HEMI, it brings durability and sound clarity to every drive.

The Flowmaster Super 40 Series builds on a legendary muffler design, producing an aggressive yet controlled exhaust tone. Its Delta Flow chambered design improves scavenging and airflow, providing better throttle response and acceleration.

This results in noticeable torque gains and a more engaging driving experience.

Constructed from 16-gauge aluminized steel, it ensures long-lasting durability against high heat and vibration. Fully MIG-welded seams further reinforce its strength, making it suited for rigorous driving conditions. The

0” Center In/Offset configuration offers flexibility in installation, fitting various custom setups.

One standout feature is reduced interior resonance, minimizing unwanted cabin noise during cruising speeds. This muffler is an excellent match for high-torque builds, delivering both the performance and sound quality required.

Pros

• Produces a deep, aggressive exhaust tone with street-friendly refinement
• Durable aluminized steel construction with MIG-welded seams for reliability
• Delta Flow chambered design enhances torque, throttle response, and acceleration

Cons

• Louder sound may not suit all drivers looking for a quieter exhaust note

Offering a blend of power, sound quality, and durability, the Flowmaster Super 40 Series Chambered Muffler is a solid choice for upgrading your vehicle’s exhaust system. Its design delivers performance gains while maintaining comfortable interior noise levels. The versatility in fitment and rugged construction ensure it adapts well to muscle cars, trucks, and street rods alike.

The versatility in fitment and rugged construction ensure it adapts well to muscle cars, trucks, and street rods alike.

In my experience, this muffler stands out by balancing an aggressive exhaust note with reduced road noise inside the cabin. It is robust enough to handle demanding driving conditions while enhancing engine performance.

Compared to other mufflers in its class, the Flowmaster Super 40 provides a distinctive sound and durability that many find worth the investment. This makes it a top option for those improving a first generation Cummins or similar high-torque engines.

12. 5″ Exhaust Pipe Kit Compatible with Ram 2500 3500 2013-2018

Upgrade your Ram 2500 or 3500 truck’s exhaust system with the SleYuYir 5 Exhaust Pipe Kit. Specifically designed for 2013-2018 models featuring the Cummins 7L Turbo Diesel and compatible with Powerstroke engines, this kit ensures a precise OEM fit that restores exhaust efficiency.

Engineered for durability and ease of installation, the exhaust pipe improves performance while withstanding tough conditions. It is an ideal replacement for worn or damaged factory components, promising reliable operation and long-term value.

The SleYuYir 5 Exhaust Pipe Kit maintains a diameter that matches OEM specifications to guarantee a perfect fit on Dodge Ram trucks from 2013 to Its direct replacement design simplifies the upgrade process and helps restore proper exhaust flow without modifications. Constructed to resist high temperatures and rough road environments, the pipe offers long-lasting durability.

Installation is straightforward since the kit aligns directly with original mounting points, eliminating the need for extra tools or complex adjustments. This exhaust pipe is well-suited for drivers looking to maintain factory-level performance or improve their truck’s exhaust system reliability. The robust materials and precise engineering contribute to reduced downtime and easier maintenance over time.

Choosing SleYuYir provides excellent value for those who want a dependable, OEM-compatible exhaust component. Whether replacing a damaged pipe or upgrading the system, this kit delivers consistent performance and maintains the integrity of your diesel engine’s exhaust setup.

Pros

• OEM-matched 5-inch diameter ensures a secure fit
• Durable build withstands high temperatures and harsh conditions
• Easy installation with direct replacement design and mounting alignment

Cons

• Designed specifically for 2013-2018 Ram 2500/3500, limiting compatibility

This exhaust pipe kit is a reliable solution for maintaining or improving your Ram truck’s exhaust system. Its compatibility with Cummins 7L Turbo Diesel engines ensures it meets the demands of heavy-duty applications while providing a straightforward installation.

7L Turbo Diesel engines ensures it meets the demands of heavy-duty applications while providing a straightforward installation. Compared to similar products, it offers a balance of quality construction and value without sacrificing fitment accuracy.

Personally, this exhaust pipe kit stands out as a practical upgrade for truck owners focused on durability and performance. The ease of installation combined with OEM compatibility makes it attractive for those who want a hassle-free replacement.

13. Flowmaster 817752 Outlaw Axle-back Exhaust System

Transform your first generation Cummins with the Flowmaster 817752 Outlaw Axle-back Exhaust System. Designed to offer a powerful and aggressive tone, this exhaust system enhances your truck’s presence while improving performance. It combines high-quality materials and a sleek design for lasting durability and style.

It combines high-quality materials and a sleek design for lasting durability and style.

Perfect for those seeking a balance between aggressive sound and moderate interior noise, this exhaust upgrades your vehicle’s exhaust flow with its dual exit tailpipes. The large

The Flowmaster Outlaw Axle-back Exhaust System is crafted with stainless steel, ensuring resistance against corrosion and long-term reliability. Its moderate interior tone keeps driving comfortable while delivering an aggressive exterior sound that commands attention.

The design incorporates dual exit tailpipes that not only look great but help improve exhaust flow for better engine performance.

Installation is straightforward for anyone with mechanical experience, allowing for a hassle-free upgrade to your Cummins. The large black ceramic-coated tips resist soot and wear, maintaining their appearance over time. This system also includes a lifetime limited warranty, adding peace of mind for durability and quality assurance.

This system also includes a lifetime limited warranty, adding peace of mind for durability and quality assurance.

Ideal for truck owners who want enhanced sound without overwhelming cabin noise, this Outlaw kit fits well on various 1st gen Cummins trucks. It provides a strong upgrade over basic stock exhausts or other less robust systems.

Its moderate tone makes it suitable for daily driving or weekend adventures alike.

Pros

• Durable stainless steel construction resists corrosion.
• Large 4.00-inch black ceramic-coated tips with aggressive styling.
• Balanced aggressive exterior sound with moderate interior tone.

Cons

• May require professional installation for ideal fitment.

The Flowmaster 817752 Outlaw Axle-back Exhaust System boosts your Cummins’ performance and sound while ensuring long-lasting durability. Its combination of aggressive tone and moderate cabin noise makes it a practical upgrade for everyday use. With dual exit tailpipes and sleek ceramic-coated tips, it delivers both function and style.

With dual exit tailpipes and sleek ceramic-coated tips, it delivers both function and style. Below is a detailed specification overview to help with your decision.

Personally, I find the Flowmaster 817752 to be a well-rounded exhaust system for first generation Cummins trucks. It balances sound and comfort effectively without overwhelming the cabin.

The ceramic-coated tips add a sharp look that stays clean over time. Compared to other aftermarket options, the ease of installation and quality materials stand out. This system is a solid choice for those wanting both style and reliable performance in one package.

14. Flowmaster 817689 Outlaw Cat-back Exhaust System

Enhance your truck’s exhaust system with the Flowmaster 817689 Outlaw Cat-back Exhaust System. Designed for powerful performance and an aggressive sound, this exhaust is a perfect match for the first generation Cummins.

With large 00-inch black ceramic-coated tips and an all-stainless steel build, it offers durability that stands the test of time.

The system’s easy installation uses factory hanger locations, making upgrades straightforward without requiring modifications.

The Flowmaster Outlaw Cat-back features a Super 10 performance muffler that delivers a deep and aggressive tone. This distinctive sound enhances driving pleasure without excessive noise, striking a great balance for daily use or spirited driving.

Constructed entirely from stainless steel, corrosion resistance and longevity are guaranteed.

Installation is simplified by utilizing factory hanger points, reducing installation time and effort. Two exit configurations, either dual rear or dual side exit, allow owners to customize the truck’s rear appearance and exhaust flow. The black ceramic coating on the tips not only provides a sleek finish but also adds protection against discoloration and wear.

Ideal for Cummins truck owners who want a bold exhaust note and dependable construction, this system upgrades sound and style while supporting performance. The lifetime limited warranty offers extra confidence, making it a solid investment for reliable truck enhancement.

Pros

• Dual exit options for customized exhaust flow and style
• Durable stainless steel construction with ceramic-coated tips
• Deep, aggressive sound balanced for everyday driving

Cons

• Relatively heavy weight may require extra handling during installation

This cat-back exhaust system combines strong build quality and distinct sound in an easy-to-install package. It enhances the Cummins truck’s auditory presence and performance capabilities without costly modifications.

Its durability and finish keep it looking good while delivering sustained performance. When compared to other exhausts, Flowmaster’s Outlaw provides a signature tone and rugged design that stands apart.

Having personally reviewed several exhaust systems, the Flowmaster Outlaw stands out for its blend of aggressive sound and build quality. It doesn’t overwhelm daily driving with noise but adds a confident growl that complements the Cummins engine well.

The flexibility with exit options makes it a valuable choice for those wanting an individualized truck setup. Overall, it represents a reliable and stylish upgrade for diesel truck owners.

15. MBRP S61120SLM Exhaust System

Experience enhanced performance and durability with the MBRP S61120SLM Exhaust System. Designed specifically for durability and sound refinement, this exhaust elevates your diesel truck’s driving experience.

Engineered for easy installation and superior exhaust flow, this system promises noticeable power gains and a deep, aggressive tone. It’s a fitting upgrade for anyone seeking quality and improved engine breathability in their first generation Cummins.

The MBRP S61120SLM Exhaust System features a precision-fit design tailored for first generation Cummins engines. Manufactured with stainless steel, it offers excellent resistance to corrosion, ensuring long-term use.

Installation is straightforward since the kit includes all necessary components with clear instructions. The exhaust produces a refined, aggressive sound that enhances the truck’s presence without excessive noise. Its weight of 89 pounds contributes to a sturdy but manageable setup.

Built by MBRP, known for quality and performance, this exhaust system suits drivers seeking improved engine efficiency and sound quality. The durable packaging dimensions (60 x

Overall, it combines robust build quality with noticeable enhancements in performance and acoustics.

Pros

• Stainless steel construction resists corrosion and wear
• Smooth exhaust flow increases horsepower and torque
• Clear installation instructions and included components for easy setup

Cons

• Weight may require assistance during installation

The MBRP S61120SLM Exhaust System represents a solid upgrade choice for Cummins owners focusing on durability and performance gains. Its construction quality and sound tuning differentiate it from similar options, delivering a balanced driving experience. When compared to other exhausts, it stands out with its combination of ease of installation and long-lasting materials.

When compared to other exhausts, it stands out with its combination of ease of installation and long-lasting materials.

Having used and reviewed multiple exhaust products, the MBRP S61120SLM stands out with its balance of performance and durability. It maintains a strong build while providing audible improvements that satisfy without overwhelming noise.

Overall, it’s a dependable choice for upgrading a first gen Cummins exhaust system.

Top Exhaust Systems for First Gen Cummins: Buyer’s Guide

Compatibility with first gen cummins

When selecting the best exhaust for first gen Cummins, understanding compatibility with first gen Cummins is key to making the right choice. It is necessary to keep in mind which model years are supported, as first generation Cummins engines cover a range of production years, each with subtle differences that can affect fit and performance. Considering engine size and variant is equally important because exhaust systems designed for specific displacements or configurations will provide better efficiency and sound quality.

Deciding between OEM and aftermarket fit involves weighing the benefits of factory-quality precision against potential performance gains and customization options offered by aftermarket alternatives. Keeping these factors in mind will help in choosing an exhaust system that fits properly and delivers the desired improvements without complications.

Performance impact

Choosing the right exhaust system for your first generation Cummins can have a noticeable effect on engine performance. Improvements in horsepower and torque are often achieved by enhancing exhaust flow, which reduces backpressure and allows the engine to breathe more efficiently. A well-designed exhaust helps in minimizing restrictions, leading to smoother combustion and increased power output.

A well-designed exhaust helps in minimizing restrictions, leading to smoother combustion and increased power output. Additionally, the influence on fuel efficiency can be positive when the system promotes better airflow, as the engine performs more effectively and may require less fuel to produce the same power. When selecting an exhaust, consider the materials used, pipe diameter, and overall design to find a balance that matches your driving style and engine setup.

These factors contribute directly to the gains in strength under the hood and can also affect how economically the vehicle uses fuel during daily driving or heavy-duty tasks.

Sound and noise levels

When choosing the best exhaust for first gen Cummins trucks, understanding the sound and noise levels plays a significant role in finding the right fit for your needs. Exhaust systems come with different sound profile options, ranging from deep and aggressive tones to milder, more subtle sounds. The type of muffler used has a major influence on noise output; for example, straight-through mufflers tend to produce louder, more aggressive sounds, while chambered or turbo-style mufflers offer reduced noise levels and a smoother tone.

Additionally, compliance with legal noise regulations is a factor worth keeping in mind to avoid potential fines or restrictions, especially in areas with strict noise limits. Choosing an exhaust system that balances desired sound characteristics and respects sound level laws helps deliver an enjoyable driving experience without crossing legal boundaries.

Installation and maintenance

Choosing the best exhaust for first gen Cummins involves understanding how installation ease can affect your overall experience. Bolton systems typically allow for straightforward setup using common hand tools without the need for welding or extensive modifications, making them appealing to those who want to quickly upgrade their vehicle without professional assistance. Custom exhaust setups might require specialized tools and some welding skills, which can add time and complexity to the process but offer greater flexibility to tailor the system exactly to your preferences.

Custom exhaust setups might require specialized tools and some welding skills, which can add time and complexity to the process but offer greater flexibility to tailor the system exactly to your preferences. Maintenance needs vary depending on the materials used; stainless steel options tend to last longer and resist corrosion, demanding less frequent upkeep, while standard steel variants may require periodic inspections for rust and wear. Keeping the exhaust clean and checking for leaks will help extend its lifespan.

Considering these aspects will make it easier to select an exhaust system that fits your mechanical abilities and keeps your first gen Cummins running smoothly for years to come.

Material and build quality

When selecting the best exhaust for first gen Cummins, paying close attention to material and build quality can greatly impact performance and longevity. Stainless steel and aluminized steel are two common materials used, each offering distinct benefits. Stainless steel typically provides superior durability and corrosion resistance, making it a preferred choice for those facing harsh weather conditions or frequent exposure to moisture.

Stainless steel typically provides superior durability and corrosion resistance, making it a preferred choice for those facing harsh weather conditions or frequent exposure to moisture. Aluminized steel, while more affordable, offers decent protection against rust but may not hold up as well over time compared to stainless steel. The welding and craftsmanship quality also plays a significant role in how well the exhaust system will perform and endure stress from heat and vibrations.

High-quality welds ensure airtight seams and reduce the likelihood of cracks or leaks developing, which can affect engine efficiency and noise levels. When considering an exhaust, examining how well the pieces are joined and the overall finish gives insight into the manufacturer’s attention to detail.

Price and warranty considerations

When choosing the best exhaust for first gen Cummins, balancing budget range and value for money plays a significant role, as options vary widely in cost depending on materials, brand reputation, and performance enhancements. Some buyers may find that investing a bit more upfront can lead to greater durability and improved engine efficiency, which pays off over time. Warranty coverage and duration offered by manufacturers differ as well; longer and more comprehensive warranties provide peace of mind against defects or premature failures, and they reflect a brand’s confidence in their product.

Customer support and service options are also key factors since responsive assistance can help with installation guidance, troubleshooting, and obtaining replacement parts if needed. Choosing a product backed by a vendor known for solid after-sales support can make maintenance easier and enhance the overall ownership experience of the exhaust system.

Frquently Asked Questions

How Does Upgrading The Exhaust Affect The Performance Of A First-Gen Cummins?

Upgrading the exhaust on a first-gen Cummins significantly improves engine performance by enhancing airflow and reducing backpressure. A high-quality aftermarket exhaust system allows exhaust gases to exit more efficiently, which in turn helps the engine breathe better. This results in increased horsepower, improved torque, and better throttle response. Additionally, an upgraded exhaust can contribute to lower engine temperatures and better fuel economy by optimizing combustion. The improved exhaust flow also complements other performance modifications, making it a popular and effective upgrade for first-gen Cummins owners.

What Are The Top-Rated Exhaust Systems For A First-Gen Cummins Diesel Engine?

Top-rated exhaust systems for a first-gen Cummins diesel engine typically emphasize durability, performance, and sound quality. Popular choices include the Banks Power exhaust system, known for improving horsepower and torque while providing a deep, aggressive tone. Another highly regarded option is the MBRP exhaust, praised for its stainless steel construction and enhanced flow efficiency, which helps optimize engine performance and fuel economy. Additionally, the AFE Power exhaust system is favored for its bolt-on design and ability to reduce backpressure, resulting in better throttle response. These systems are commonly chosen by enthusiasts aiming to balance power gains with a refined exhaust note for their first-gen Cummins trucks.

What Are The Benefits Of A Free-Flowing Exhaust On A First-Gen Cummins?

A free-flowing exhaust on a first-gen Cummins engine improves overall performance by reducing backpressure. This allows exhaust gases to exit the engine more efficiently, leading to better airflow and increased horsepower and torque. As a result, the engine can breathe more easily, enhancing throttle response and fuel efficiency. Additionally, a less restrictive exhaust system helps lower engine temperatures by promoting quicker heat dissipation. This can contribute to improved engine longevity and reliability, especially under heavy loads or towing conditions common with first-gen Cummins engines.

Are There Any Budget-Friendly Exhaust Options That Improve Sound And Performance For A First-Gen Cummins?

Yes, there are budget-friendly exhaust options available for a first-gen Cummins that enhance both sound and performance. Popular choices include basic turbo-back or cat-back systems using stainless steel or aluminized steel, which help improve exhaust flow and increase horsepower and torque without breaking the bank. Brands like MBRP and Banks offer affordable kits designed specifically for early Cummins engines. Additionally, upgrading to a high-flow muffler or removing restrictive components like resonators can boost sound and efficiency on a budget. These modifications provide a noticeable improvement in exhaust tone and engine breathing, making them ideal for first-gen Cummins owners seeking performance gains without expensive investments.

Which Exhaust Material Is Best For Durability And Heat Resistance On A First-Gen Cummins?

For a first-gen Cummins engine, stainless steel is considered the best exhaust material for durability and heat resistance. Stainless steel offers excellent corrosion resistance, which is crucial for withstanding harsh exhaust gases and environmental conditions over time. Its strength also helps prevent cracking and damage under high temperatures. Additionally, stainless steel maintains its structural integrity better than mild steel or aluminized steel, making it ideal for long-term use. While it may cost more upfront, the investment pays off through enhanced performance and longevity, especially important for the robust first-gen Cummins engines.

Conclusion

Choosing the best exhaust for first gen Cummins depends on balancing performance gains, sound preferences, and durability. Many options offer improved horsepower and torque, along with a deeper, more aggressive tone that complements the engine’s character.

The best exhaust for first gen Cummins is ideally suited for owners looking to enhance their truck’s power and sound without extensive customization. Considering build quality and compatibility will help address concerns about fitment and longevity.

Ultimately, selecting an exhaust that aligns with your driving needs and style will provide satisfaction, making the investment worthwhile without compromising reliability or comfort.