Top 12 Best Exhaust for 6.7 Cummins That Boost Power!

If you drive a 7 Cummins, you know how important the exhaust system is for performance and reliability.

Finding the best exhaust for 7 Cummins can improve power, sound, and fuel efficiency without causing unnecessary noise or emissions issues. This type of upgrade is designed for truck owners who want a durable and effective solution that handles heavy-duty use.

A quality exhaust system can also enhance your engine’s breathing, helping it run smoother under load. In this review, you will learn about some of the leading exhaust options available for the 7 Cummins engine.

We’ll look at their build quality, sound characteristics, and overall impact on your truck’s performance. This guide will help you make a well-informed decision based on your needs and preferences.

Top Choices to Maximize Performance and Sound for Your Diesel Powerhouse

Image	Product	Price
Top Pick 1	4″ Exhaust Pipes Compatible for 2007-2012 Ram 2500, for 2007-2012	Check Price Now
Top Pick 2	Stainless Steel Exhaust Pipe Kit for 2013-2018 Ram 2500 3500	Check Price Now
Top Pick 3	Diesel Exhaust 4″ Dodge Fit for 2013-2018 Ram 2500 3500	Check Price Now

1. 4″ Exhaust Pipes Compatible for 2007-2012 Ram 2500, for 2007-2012

Enhance the performance and sound of your 2007-2012 Ram 2500 or 3500 Cummins with precision-engineered 4 exhaust pipes. Designed specifically for these models, the kit ensures seamless integration while delivering a powerful diesel tone.

Built to last, the exhaust pipes feature robust T-409 stainless steel that stands up to corrosion and harsh driving conditions. The CNC machined flanges and TIG welds guarantee tight seals and longevity.

Clamps and hangers are expertly designed to fit original equipment manufacturer (OEM) locations, minimizing installation hassles. Ideal for Ram 2500 and 3500 trucks with the

7L Cummins engine, these pipes enhance both sound and power without complex modifications. Offering a rich, muscular diesel note, the pipes elevate your truck’s driving experience while maintaining a clean, factory-compatible appearance. This setup is a strong option for those seeking a durable, well-fitting exhaust solution that balances sound, durability, and performance enhancement in one package.

This setup is a strong option for those seeking a durable, well-fitting exhaust solution that balances sound, durability, and performance enhancement in one package.

Pros

• Constructed with corrosion-resistant T-409 stainless steel for long service life
• CNC machined flanges and TIG welded joints ensure perfect sealing and durability
• Mandrel bent tubing improves exhaust flow, enhancing engine power and sound quality

Cons

• May require professional installation for best fitment and performance

The LELEHOKA 4 exhaust pipe kit offers a balanced mix of quality materials and precision fitment for the 2007-2012 Ram 2500/3500 Cummins 7L trucks. Its sound upgrade complements the factory system well without being overwhelming, making it suitable for those who appreciate a deeper, muscular tone.

Its sound upgrade complements the factory system well without being overwhelming, making it suitable for those who appreciate a deeper, muscular tone. Compared to other exhaust upgrades, this set stands out due to its durable stainless steel construction and easy compatibility with OEM locations. For truck owners who want to improve exhaust flow and add a resonant diesel sound, this is an efficient and practical choice.

This exhaust pipe kit is a solid upgrade choice for anyone aiming to enhance their Cummins-powered Ram truck’s exhaust system. Its durable materials paired with sound and performance improvements provide good value without complicating installation.

Compared with similar aftermarket exhaust pipes, it benefits from a strong design focus on fitment and material quality, making it a worthy consideration for diesel truck owners seeking longevity and better exhaust tone.

2. Stainless Steel Exhaust Pipe Kit for 2013-2018 Ram 2500 3500

The Stainless Steel Exhaust Pipe Kit for 2013-2018 Ram 2500 3500 delivers a precise and durable solution for replacing diesel exhaust pipes. Designed specifically for Cummins

Built from 409 stainless steel, this exhaust pipe kit resists high temperatures and corrosion to provide long-lasting reliability. It improves exhaust efficiency by preventing soot leakage and maintaining optimal boost pressure during operation.

Constructed with a reinforced one-piece molding design, the kit stands up well to fluctuating temperatures and tough mechanical stresses. Its precision-flanged connection ensures that linking to the turbocharger remains secure and leak-resistant, eliminating common issues like turbo lag or underbody staining caused by soot. The pipe matches OEM specifications exactly, including port dimensions and hole placement, for hassle-free installation to existing systems.

The pipe matches OEM specifications exactly, including port dimensions and hole placement, for hassle-free installation to existing systems.

Suitable for diesel truck owners who want to maintain or upgrade their vehicle’s exhaust setup, the kit offers a solid balance of strength and functional design. Its design supports prolonged use without warping or degradation, reducing frequent replacement needs.

Pros

• Durable 409 stainless steel construction resists heat and corrosion.
• Precision-flanged design ensures leak-free turbocharger connection.
• One-piece molding enhances structural integrity under harsh conditions.

Cons

• Custom fit only for specific Ram 2500 and 3500 diesel models (2013-2018).

Overall, the Stainless Steel Exhaust Pipe Kit stands out as a dependable replacement part for Cummins 7L diesel trucks, offering durability and efficiency improvements. It meets OEM requirements and allows for straightforward installation while enhancing exhaust performance.

It meets OEM requirements and allows for straightforward installation while enhancing exhaust performance. Compared to some aftermarket options, its material quality and construction design support longer service life and reduced maintenance.

In my opinion, this exhaust pipe kit offers an excellent balance of durability and practical design, specifically tailored for Ram trucks using the Cummins 7L engine. Its sturdy stainless steel build and attention to fitment details make it a trustworthy replacement that could extend the life of the vehicle’s exhaust system.

Its sturdy stainless steel build and attention to fitment details make it a trustworthy replacement that could extend the life of the vehicle’s exhaust system. It is a smart investment for anyone looking to maintain or improve truck performance without frequent repairs or adjustments.

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

Upgrade your Dodge Ram 2500 or 3500 with a Diesel Exhaust system tailored for 2013-2018 models featuring the 7L Cummins engine. This exhaust pipe is designed to enhance the performance and sound of your truck while maintaining reliable durability over time.

This exhaust pipe is designed to enhance the performance and sound of your truck while maintaining reliable durability over time.

Built specifically to fit Dodge Ram models with Cummins diesel engines, this exhaust pipe offers a seamless replacement that matches OEM specifications. Its 4-inch diameter boosts exhaust flow, supporting engine efficiency and helping maintain optimal power output with a refined sound profile.

Constructed from quality materials, this exhaust pipe withstands harsh conditions and resists corrosion, ensuring long-lasting use on and off the road. Installation is straightforward, allowing for a straightforward replacement without complicated modifications or tools.

Performance improvements include better exhaust gas management, which can contribute to smoother acceleration and potentially increased fuel efficiency. The design is optimized for vehicles fitted with the 7L Cummins Diesel powerhouse, making it a smart choice for those focused on maintaining their truck’s reliability.

This component suits owners who want a dependable exhaust solution that aligns with factory fitment but enhances durability and flow. It strikes a balance between improved function and maintaining the integrity of the vehicle’s emissions system without extensive alterations.

Pros

• Exact fit for 2013-2018 Dodge Ram 2500 and 3500 with 6.7L Cummins Diesel engines
• Durable build resists rust and harsh environments for long-term use
• Improves exhaust flow to support engine performance and smooth power delivery

Cons

• Limited compatibility outside specified Ram models and engine types

This exhaust pipe provides a reliable replacement option that combines quality construction with performance benefits tailored for Cummins diesel trucks. It’s well suited for those who prefer a factory-style upgrade without compromising strength or efficiency. For comparison, while some aftermarket exhausts emphasize aggressive sound, this product balances improved flow with quieter operation, appealing to users favoring practical enhancement over louder exhaust noise.

For comparison, while some aftermarket exhausts emphasize aggressive sound, this product balances improved flow with quieter operation, appealing to users favoring practical enhancement over louder exhaust noise.

From a personal standpoint, this exhaust pipe stands out for its precise fit and resilience. It makes an excellent choice for Dodge Ram owners who seek a stock-like upgrade that won’t demand extra adjustments or compromise on durability.

While less aggressive than some aftermarket options, its performance and longevity justify consideration for anyone focused on solid, hassle-free improvements. The product balances quality and design, ensuring the truck’s reliability is well supported over many miles.

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

Enhance your diesel vehicle’s performance with the Upower 4 Inlet Diesel Exhaust Muffler. Designed for durability and efficiency, this muffler supports a smooth exhaust flow while reducing unwanted noise.

This muffler suits those seeking reliable exhaust solutions compatible with 4-inch pipes. It balances effective sound suppression with improved exhaust velocity, benefiting diesel engines that demand consistent performance. A universal fit ensures easy integration with most compatible exhaust systems.

A universal fit ensures easy integration with most compatible exhaust systems.

The Upower Diesel Exhaust Muffler offers a 7-inch round body, with a 4-inch inlet and outlet diameter, and an overall length of 30 inches. Both ends can function as inlets, providing versatile installation options. Its straight-through design minimizes backpressure, enhancing engine efficiency and responsiveness while maintaining quieter operation.

Its straight-through design minimizes backpressure, enhancing engine efficiency and responsiveness while maintaining quieter operation.

Crafted from stainless steel, the muffler stands up well against corrosion and heat, ensuring reliable protection over many years. Inside, Continuous Roving Fiberglass (CRF) absorbs interior resonance, reducing harsh drone sounds typical in diesel engines. This muffler fits universally with any 4-inch exhaust pipe, welding together smoothly for a tight, leak-free connection.

Installation is straightforward for anyone familiar with exhaust modifications since the design accommodates seamless welding. This muffler is ideal for diesel truck owners who prioritize sound control and exhaust efficiency without sacrificing durability.

Pros

• Durable stainless steel body with corrosion resistance
• CRF technology reduces interior noise resonance
• Universal fit for all 4-inch exhaust pipes with dual inlet ends

Cons

• Requires welding for installation, not a clamp-on design

The Upower 4 Diesel Exhaust Muffler combines robust materials and thoughtful engineering to deliver reliable noise reduction and exhaust flow efficiency. It fits well in many diesel setups where a 4-inch pipe is standard and offers long-term durability against harsh conditions.

In my opinion, the Upower muffler offers a solid balance between functionality and longevity. Its stainless steel construction coupled with noise-absorbing fiberglass makes it suitable for those seeking quieter and efficient diesel exhaust performance. While installation requires welding skills, the benefits it provides in exhaust flow and durability make it a dependable choice for diesel truck owners.

While installation requires welding skills, the benefits it provides in exhaust flow and durability make it a dependable choice for diesel truck owners. Compared to other mufflers, it stands out with its universal fit and noise reduction capacity without compromising engine power.

5. 4” Exhaust Pipe for 2019-2024 Dodge Ram 2500 3500 with

Enhance your Dodge Ram 2500 or 3500’s performance with the 4” Exhaust Pipe specifically designed for the 2019-2024 models featuring the Cummins 7L Turbo Diesel engine. This component offers an effective upgrade, balancing durability and improved exhaust flow to elevate both power and sound quality.

Precision-engineered from high-quality materials, it ensures long-lasting reliability.

Compatible with OEM exhaust systems (excluding Cab & Chassis models), the pipe delivers a robust diesel sound while maintaining a perfect fit. Ideal for drivers seeking improved engine breathing along with a muscular exhaust tone, it provides a straightforward installation experience backed by thoughtful design tailored to your truck’s specifications.

The 4” diameter pipe is made from T-409 stainless steel, a material known for withstanding corrosion and harsh conditions. This choice benefits truck owners by increasing the lifespan of the exhaust system while preserving consistent performance. TIG welding and CNC machine flanges enhance structural integrity and ensure a precise fit.

TIG welding and CNC machine flanges enhance structural integrity and ensure a precise fit.

Mandrel-bent tubing maximizes exhaust flow, reducing backpressure and helping your engine breathe more freely. Its clamp hanger system aligns perfectly with OEM locations, simplifying installation without the need for modifications.

The product creates a richer and more aggressive diesel sound profile that suits work trucks and enthusiasts seeking added presence on the road.

This exhaust pipe is recommended for 2019-2024 Ram 2500 and 3500 models with the Cummins 7L engine, except Cab & Chassis styles. It is ideal for those looking to refine their truck’s exhaust characteristics without extensive customization, offering balance between sound, performance, and durability.

Pros

• Durable T-409 stainless steel resists corrosion effectively
• Mandrel-bent tubing improves exhaust flow and engine performance
• Direct fit design with OEM clamp hangers ensures easy installation

Cons

• Not compatible with Cab & Chassis models

Overall, the 4” Exhaust Pipe for 2019-2024 Dodge Ram 2500 and 3500 offers a reliable and practical upgrade for diesel truck owners. It combines durable materials and engineering precision to deliver improved exhaust flow and enhanced sound. Compared with some aftermarket options, this product provides a straightforward fit with less hassle and solid performance gains.

From personal experience, this exhaust pipe balances performance enhancements with ease of installation, making it a solid choice for Cummins 7L owners. While it may not dramatically increase horsepower alone, the improved exhaust sound and flow are noticeable on daily drives.

While it may not dramatically increase horsepower alone, the improved exhaust sound and flow are noticeable on daily drives. Its durability and OEM-like fit provide peace of mind for those wanting to maintain their truck’s stock-like feel with added style and function.

6. 6.7 Cummins Crankcase Ventilation Filter Replaces# CV52001 68002433AB 4936636 904-418

Maintain your 7L Cummins engine’s efficiency with a reliable crankcase ventilation filter.

Designed specifically for various heavy-duty vehicles, it restores drivability by ensuring proper filtration and ventilation. This replacement part offers a straightforward upgrade to keep your engine running smoothly.

Precision-engineered for compatibility with Dodge Ram, Ford F-Series, Freightliner, and Blue Bird models, the filter meets OEM standards. It supports peak engine performance by preventing harmful buildup that can affect your vehicle’s operation. Durable materials and certified quality add to its lasting value.

Replacing the crankcase ventilation filter is vital for vehicles using the 7L Cummins ISB engine.

It fits a broad range of models from 2008 through 2021, including Ram 2500 to 5500, several Freightliner series, and Blue Bird buses. Such wide coverage means it’s suitable for many fleet and individual owners.

Crafted with high-quality materials, the filter is tested to exceed OEM durability standards. This ensures reliable performance and protection against contaminants that can degrade engine functionality. Installation is straightforward, ideal for DIY mechanics or professionals alike.

The part effectively maintains pressure balance and exhaust gas flow within the crankcase system.

Its compatibility with manufacturer part numbers like CV52001, 68002433AB, and 4936636 makes it a dependable choice over aftermarket alternatives. The included warranty provides extra assurance.

For pickup trucks or heavy-duty buses, this part helps avoid common engine issues linked to ventilation failure, enhancing longevity and efficiency.

Pros

• Extensive fitment for multiple 6.7L Cummins engine vehicles
• Meets or exceeds OEM quality and durability standards
• Simple installation with guaranteed compatibility

Cons

• Limited to vehicles equipped with Cummins 6.7L ISB engines

For those seeking dependable engine maintenance, this crankcase ventilation filter balances quality and performance. Compared to generic or lower-grade substitutes, it offers a certified standard that safeguards your engine’s internal health.

Regular replacement with this item supports long-term vehicle reliability and smooth operation.

Having used various crankcase filters, this option stands out with its precise fit and sturdy construction. Its OEM certification provides peace of mind over cheaper alternatives that have caused premature wear in the past.

The product suits vehicle owners who prioritize engine health and reliability without the hassle of complex installation. Overall, it offers a practical solution to help maintain the performance and longevity of engines fitted with the 7L Cummins ISB series.

7. Stainless Steel Exhaust Pipe Kit + Flexpipe-Back + Muffler for

Upgrade your 7L Cummins diesel truck’s exhaust system with a reliable replacement designed specifically for 2019-2025 Dodge Ram 2500 and 3500 models. This stainless steel exhaust pipe kit offers a seamless fit and durable construction to improve performance and longevity.

Engineered from tough 409 stainless steel, it resists high heat and corrosion, ensuring extended use in demanding conditions. Its precision-flanged connection at the turbocharger outlet helps maintain boost pressure while preventing leaks and soot buildup.

The kit includes a back section with a flexpipe and muffler, tailored for straightforward installation that meets OEM specifications. The reinforced one-piece molding enhances durability, coping effectively with temperature shifts and heavy-duty use without compromising strength.

Designed to reduce turbo lag and avoid exhaust leaks, it boosts engine efficiency and drivability on diesel engines. Installation is simplified by accurately positioned ports and holes, offering a clean, leak-free fit that integrates smoothly with existing systems.

Ideal for truck owners seeking a resilient and efficient exhaust upgrade, this kit balances build quality with functional design. It stands out against generic options by delivering enhanced reliability and maintaining optimal exhaust flow, contributing to better overall performance.

Pros

• Durable 409 stainless steel construction resists heat and corrosion
• Precision flange ensures leak-free turbocharger outlet connection
• One-piece reinforced molding adds strength and longevity

Cons

• Fitment strictly limited to 2019-2025 Dodge Ram 2500/3500 Cummins 6.7L models

This exhaust pipe kit combines toughness and precision to improve your diesel truck’s exhaust system. Its corrosion resistance and leak prevention features provide reliable performance in demanding environments. The easy installation process ensures this is a practical upgrade for Cummins owners wanting dependable exhaust components.

The easy installation process ensures this is a practical upgrade for Cummins owners wanting dependable exhaust components.

Overall, this exhaust pipe kit offers a solid balance between durability and performance for those running Cummins 7L engines.

For anyone needing a reliable replacement or upgrade, it delivers strong value and quality craftsmanship that stands up to tough use.

8. Borla 140085 Cat-Back Exhaust System (40085)

Upgrade your 7 Cummins engine’s performance with the Borla 140085 Cat-Back Exhaust System. Designed to boost both power and efficiency, this exhaust system delivers impressive gains without sacrificing fuel economy.

Precision engineering and durable materials make it a reliable choice for heavy-duty applications.

Engineered for power and smooth operation, the Borla system enhances exhaust flow and reduces backpressure. Installation is straightforward, requiring minimal effort and time. Ideal for those seeking a balance between enhanced horsepower and fuel savings, it’s built to last under demanding conditions.

The Borla 140085 Cat-Back Exhaust System is crafted to improve exhaust emissions while generating additional power internally. It offers a well-rounded performance boost by optimizing gas flow through its design, resulting in better horsepower and torque response. The package includes all necessary components for a hassle-free installation experience.

The package includes all necessary components for a hassle-free installation experience.

Constructed from high-quality materials, this system resists corrosion and extreme heat, ensuring long-term durability. Its design also contributes to a cleaner, more aggressive exhaust tone without overwhelming noise. The exhaust’s efficient flow promotes better fuel economy, making it a smart upgrade for daily drivers and work trucks alike.

Installation requires moderate mechanical skill but is generally aided by clear instructions. The bolt-on nature of this cat-back system means no cutting or welding is necessary, saving time and effort. Drivers aiming for a noticeable power increment with an easy installation will find this system highly suitable, especially for heavy-duty Cummins engines needing upgraded exhaust performance.

Pros

• Enhances horsepower and torque with optimized exhaust flow
• Provides improved fuel economy due to efficient design
• Durable construction resists corrosion and high temperatures

Cons

• Requires moderate mechanical skill for installation

The Borla 140085 Cat-Back Exhaust System offers a solid combination of durability and performance improvements for the 7 Cummins engine. Its quality build and effective design contribute to better power output and longevity under tough conditions.

When compared to some competitors, this system stands out for its balance of ease of installation and lasting materials, though a bit of mechanical know-how is beneficial during setup.

From personal experience, the Borla 140085 delivers consistent performance upgrades while maintaining a refined exhaust note. The ease of installation for those comfortable with basic automotive tasks makes it accessible. Its well-rounded benefits suit daily driving as well as more demanding workloads, making it a dependable exhaust upgrade for

Its well-rounded benefits suit daily driving as well as more demanding workloads, making it a dependable exhaust upgrade for 7 Cummins owners looking for practical improvements without compromise.

9. Flowmaster 817674 American Thunder Cat-back Exhaust System

Enhance your truck’s performance and sound with the Flowmaster 817674 American Thunder Cat-back Exhaust System. Designed to deliver a perfect balance of aggressive tone and moderate sound, this system improves your vehicle’s exhaust flow effortlessly.

Its durable stainless steel construction ensures longevity even in the toughest conditions.

Engineered with Super HP2 Laminar Flow Technology, it provides maximum clearance for off-road driving. Installation is straightforward, utilizing factory hanger locations for a secure fit.

The Flowmaster American Thunder System offers more than just an upgrade in sound; it provides a noticeable improvement in exhaust efficiency. Crafted from stainless steel, it resists corrosion and handles heat better than conventional exhausts. The single rear exit design creates moderate sound without overwhelming noise, appealing to drivers wanting power and style.

The single rear exit design creates moderate sound without overwhelming noise, appealing to drivers wanting power and style.

Its Super HP2 Laminar Flow Technology optimizes exhaust flow, boosting horsepower and torque. This system fits the factory hanger locations, meaning installation is quick and requires no modification. The moderate sound level suits both daily driving and spirited off-road adventures.

Perfectly engineered for the 7 Cummins engines, it allows enough clearance for rugged terrains.

It’s an excellent option for anyone seeking durability and enhanced performance without complexity.

Pros

• Durable stainless steel withstands harsh conditions
• Super HP2 Laminar Flow Technology enhances exhaust flow
• Utilizes factory hangers for quick and easy installation

Cons

• Sound level may not satisfy those wanting a louder exhaust note

Flowmaster’s American Thunder Cat-back Exhaust System delivers a strong performance upgrade with durable build quality and practical design. Its moderate sound complements everyday driving while enhancing power and off-road clearance.

Compared to other exhaust options for the 7 Cummins, it strikes a balance between noise, performance, and ease of installation.

Having tested similar exhaust systems on 7 Cummins trucks, this Flowmaster model stands out with its combination of build and sound profile. It offers a noticeable improvement without overwhelming noise, making it versatile for daily use and off-road conditions.

The ease of installation using factory hangers is a bonus, reducing the need for specialized tools or modifications. Overall, it’s a solid choice for those prioritizing quality, durability, and balanced performance.

10. Flowmaster 717835 FlowFX Direct Fit Muffler

Upgrade your 7 Cummins with an exhaust system that balances power and sound.

The Flowmaster 717835 FlowFX Direct Fit Muffler delivers a moderate to aggressive tone that enhances your truck’s presence without overwhelming noise.

Designed for seamless installation, this muffler fits directly into your existing setup. It offers enhanced performance and a durable build that complements your diesel engine’s strength.

The Flowmaster FlowFX muffler is engineered to provide an aggressive exhaust note while maintaining a refined tone suitable for daily driving. Its direct-fit design allows for quick, bolt-on installation without modifications, saving time and effort in the upgrade process. The moderate size and shape ensure it integrates well with your truck’s undercarriage without added bulk or weight.

Constructed from high-quality 409 stainless steel, this muffler offers excellent resistance to corrosion and wear. This endurance enhances the longevity of your exhaust system, even in harsh conditions.

Its flow-optimized design improves exhaust gas evacuation, contributing to better engine efficiency and throttle response, which can positively affect horsepower and torque.

For drivers looking to amplify their 7 Cummins’ exhaust tone while maintaining street-legal sound levels, the Flowmaster 717835 is a practical choice. Whether for work or weekend adventures, it balances strong performance with usability.

The lightweight construction also aids in reducing overall vehicle weight, adding to fuel efficiency benefits.

Pros

• Moderate to aggressive exhaust tone enhances engine sound
• Direct-fit system enables quick and easy installation
• Durable 409 stainless steel construction for long-lasting use

Cons

• Exhaust tone may be louder than some prefer in quiet environments

Flowmaster’s 717835 FlowFX Direct Fit Muffler offers a solid blend of performance, sound, and durability tailored for the 7 Cummins. It serves as a reliable upgrade that improves exhaust flow and delivers a satisfying tone without complicated installation processes.

While it stands out for its build and design, those seeking a very quiet exhaust might find it a bit loud.

In personal experience, the Flowmaster 717835 delivers a robust sound that enhances the driving feel without being obtrusive. Its installation is straightforward for those with basic mechanical skills, making it accessible for most truck owners. Compared to similar mufflers, this model strikes a good balance between aggressive tone and everyday drivability, making it a versatile upgrade for the

Compared to similar mufflers, this model strikes a good balance between aggressive tone and everyday drivability, making it a versatile upgrade for the 7 Cummins engine.

11. Flowmaster 817737 American Thunder Cat-back Exhaust System

Upgrade your diesel truck’s performance and sound with the Flowmaster 817737 American Thunder Cat-back Exhaust System. Designed specifically for a powerful 7 Cummins engine, this system enhances exhaust flow and emits a bold, aggressive tone without overwhelming noise.

7 Cummins engine, this system enhances exhaust flow and emits a bold, aggressive tone without overwhelming noise. Precision-engineered to fit perfectly and perform reliably, it transforms your drive experience.

The kit features a Dyno Tuned design and exclusive Scavenger X-pipe crossover that balance exhaust pulses for improved horsepower and torque. Built from high-quality stainless steel, it offers durability and resistance to corrosion over time. Installation uses factory hanger locations, making the fitment process easier with minimal modifications needed for a clean factory-look setup.

The specially tuned resonators of the American Thunder system provide a deep, roar-like sound that commands attention on the road. Its Delta Flow technology reduces backpressure, boosting engine efficiency and power output.

Maintenance is simplified thanks to the robust stainless steel construction and the inclusion of a lifetime limited warranty for peace of mind. The system’s design balances loudness with drivability, avoiding drone during cruising.

This makes it a great upgrade for daily drivers and performance fans alike.

Overall, the Flowmaster 817737 strikes a strong balance between aggressive sound, improved performance, and long-lasting build quality. It performs better than many aftermarket options in the same category, providing solid value by combining factory-style install with race-inspired engineering.

Pros

• Dyno tuned with Scavenger X-pipe for power increase
• Durable, rust-resistant stainless steel construction
• Easy installation using factory hanger locations

Cons

• Heavier than some competing exhaust systems

The Flowmaster 817737 American Thunder Cat-back Exhaust System offers a compelling upgrade for 7 Cummins owners seeking enhanced performance and a commanding exhaust note.

Its thoughtful engineering delivers a mix of power gains, sound quality, and fitment convenience. For those comparing exhaust kits, its stainless steel durability and tuned X-pipe design stand out as notable positives.

Personally, the balance between aggressive sound and manageable drone impressed me most. Some louder exhausts risk becoming tiresome on long drives but this system avoids that pitfall. The stainless steel build ensures it will withstand tough conditions while maintaining appearance over years.

In comparison to other aftermarket options, the Flowmaster 817737 offers a well-rounded upgrade that suits both performance and everyday use.

12. Flowmaster 817689 Outlaw Cat-back Exhaust System

Enhance your 7 Cummins truck’s performance and sound with the Flowmaster 817689 Outlaw Cat-back Exhaust System. Designed to deliver a bold and aggressive tone, this exhaust elevates both style and functionality.

It offers a robust upgrade that truck owners can rely on for improved exhaust flow and impressive durability.

With versatile exit options and premium materials, it ensures a perfect fit and a standout appearance. The system’s build quality supports long-lasting use, making it a dependable choice for those seeking enhanced performance and distinctive sound.

The Flowmaster Outlaw Cat-back system features dual exit options, allowing either a rear or side exit layout. This flexibility accommodates different truck setups and personal preferences. Equipped with large

00-inch black ceramic coated tips, the system adds a sleek, durable finish that resists corrosion.

Crafted entirely from stainless steel, the exhaust stands up to harsh conditions and everyday wear with ease. Installation is straightforward, utilizing the factory hanger locations to minimize modifications and reduce setup time.

The Super 10 performance muffler delivers a deep, aggressive sound without excessive noise, improving driving enjoyment.

This system suits drivers aiming for enhanced exhaust flow and a commanding tone without sacrificing reliability. Its aggressive sound signature provides noticeable presence on the road.

Flowmaster also backs the product with a lifetime limited warranty, reinforcing its commitment to quality and customer satisfaction.

Pros

• Dual exit options: rear or side for versatility
• Durable stainless steel construction with ceramic coated tips
• Deep, aggressive exhaust tone with Super 10 muffler

Cons

• Relatively heavy at 56.1 pounds, requiring proper handling during installation

The Flowmaster 817689 Outlaw Cat-back Exhaust System offers a compelling balance of performance and durability for 7 Cummins owners.

Its build quality and sound profile make it a solid option compared to other exhausts lacking ceramic coatings or flexible exit setups. The straightforward installation process and use of factory hangers simplify upgrading your truck’s exhaust without extra hassle.

In my experience, the Flowmaster Outlaw system stands out for its rugged construction and the ability to tailor the exhaust exit. The sound it produces is assertive without being overwhelming, fitting well in both daily driving and more spirited rides.

Top 6.7 Cummins Exhausts: Best Picks & Buying Guide

Installation and maintenance

Choosing the right exhaust system involves thinking about how easy it is to install, whether a bolt-on system or a custom setup will suit your needs. Bolt-on options generally require fewer tools and less mechanical experience, making them a good choice for those who prefer a straightforward process.

Custom exhausts, on the other hand, might demand more specialized tools and professional assistance to get everything aligned perfectly. Regular upkeep plays a role in how long the exhaust will last; cleaning and occasional checks can prevent rust and performance loss over time. Systems made from high-quality materials like stainless steel usually offer greater durability and resist corrosion better, reducing maintenance frequency.

Keeping these factors in mind helps you pick an exhaust that not only improves your vehicle’s function but also fits comfortably within your comfort zone for installation and maintenance.

Compatibility with cummins engine

When selecting an exhaust system for a 7 Cummins engine, understanding model year and engine variant compatibility greatly influences the fit and performance. Different years often feature subtle changes in design and engineering, so matching the exhaust to your specific engine model ensures proper connection and maximizes efficiency.

Different years often feature subtle changes in design and engineering, so matching the exhaust to your specific engine model ensures proper connection and maximizes efficiency. Choosing between OEM and aftermarket fitment involves weighing factory reliability and exact specifications against aftermarket options that may offer enhanced performance or customization. It is important to verify that the exhaust system aligns with your truck’s turbocharger and fuel system specifications, as these components work together to maintain engine balance and output.

Properly matched parts help improve exhaust flow, boost power delivery, and maintain fuel efficiency without risking damage or voiding warranties. Whether aiming for better sound, increased horsepower, or improved durability, selecting an appropriately compatible exhaust setup tailored to your engine and vehicle year will deliver the best overall results.

Performance and power gains

Choosing the best exhaust for 7 Cummins engines can lead to noticeable improvements in both horsepower and torque, often increasing power output by several percentage points depending on the system’s design and quality.

This smoother flow improves combustion and can result in better throttle response and fuel efficiency under various conditions. Such upgrades not only benefit day-to-day driving but also have a positive effect on towing and payload capabilities, enabling trucks to handle heavier loads with greater ease and reliability.

For those regularly hauling trailers or transporting heavy cargo, selecting an exhaust that optimizes flow without compromising durability is key to maintaining performance over long distances and under demanding workloads.

Sound and noise levels

Choosing the right exhaust system for a 7 Cummins involves paying close attention to how it affects sound and noise levels, which vary due to different exhaust note and tone variations offered by manufacturers.

Some systems prioritize a deep, aggressive rumble, while others achieve a more subtle growl depending on the configuration and materials used. Muffler and resonator options play a significant role in shaping this sound profile; adding or upgrading these components can soften harsh noises or enhance the throatiness of the exhaust. Additionally, compliance with local noise regulations should guide your decision, as certain areas have strict limits on allowable decibel levels to avoid fines or legal issues.

Balancing the desired sound with legal requirements typically leads to a more enjoyable driving experience without unnecessary disturbance to the surroundings.

Material quality and durability

When choosing an exhaust system for a 7 Cummins engine, paying close attention to the materials used can make a significant difference in performance and longevity.

Stainless steel is often preferred for its excellent corrosion resistance and ability to withstand harsh weather conditions, which helps keep the exhaust in good shape over time. Aluminized steel offers a more budget-friendly option while still providing decent protection against rust, though it may not last as long in extreme environments. The overall build quality also hinges on weld strength and construction standards; high-quality welds contribute to a durable, leak-free system that holds up well under the stress of heavy-duty use.

Whether the exhaust will be used for everyday driving, towing, or off-road adventures, selecting one with solid material integrity and craftsmanship ensures a reliable upgrade that performs well and endures the rigors of the road ahead.

Budget and warranty

When selecting an exhaust for the 7 Cummins engine, understanding how price ranges correspond to the quality and features offered can help find value for money suited to your needs. Some options come with higher initial costs but include durable materials and advanced engineering that contribute to better performance and longevity.

Manufacturer support often plays a key role in the purchasing decision, with some brands providing longer warranty coverage that reflects confidence in their product’s reliability. This support can be reassuring, especially when considering the availability of replacement parts, which ensures that maintaining and repairing the exhaust system will be manageable over time.

Reliable access to components reduces downtime and potential additional expenses, making the overall investment more practical regardless of the initial price. Taking these factors into account helps make an informed decision tailored to your vehicle’s requirements and your expectations for performance and durability.

Frquently Asked Questions

What Factors Should I Consider When Choosing An Exhaust For My 6.7 Cummins?

When choosing an exhaust for your 6.7 Cummins, consider factors like performance gains, sound level, and emission compliance. A high-quality aftermarket exhaust can improve horsepower and torque by enhancing exhaust flow, but it’s important to ensure it meets local emission regulations to avoid legal issues. Additionally, consider the noise level you prefer—some exhausts offer a louder, aggressive sound, while others provide a quieter, more subtle tone. Durability and material quality are also key. Stainless steel exhausts resist corrosion and last longer, especially in harsh conditions. Lastly, think about installation ease and compatibility with your specific truck model to ensure a proper fit and optimal performance.

What Is The Best Exhaust Sound For A 6.7 Cummins Truck?

The best exhaust sound for a 6.7 Cummins truck is one that balances power, performance, and personal preference. Many enthusiasts prefer a deep, aggressive tone that reflects the engine’s turbocharged diesel nature, enhancing the truck’s rugged appeal without being overwhelmingly loud. Aftermarket exhaust systems like Borla, MBRP, or AFE offer options that maximize horsepower and torque while delivering a satisfying growl. Ultimately, the ideal exhaust sound depends on what you want from your truck—whether it’s a subtle rumble for daily driving or a more robust roar for off-road adventures. Choosing a quality exhaust system tailored for the 6.7 Cummins ensures improved performance and a sound that matches your style.

Are There Any Fuel Efficiency Benefits With Certain Exhausts On A 6.7 Cummins?

Yes, certain exhaust systems can improve fuel efficiency on a 6.7 Cummins engine. High-performance exhausts reduce backpressure, allowing the engine to expel exhaust gases more efficiently. This improved airflow helps the engine run more smoothly and can lead to better fuel combustion, which may enhance fuel economy. Additionally, some exhaust upgrades include features like tuned headers or larger diameter pipes that optimize exhaust flow. However, the actual fuel efficiency gains depend on the specific exhaust design and overall engine tuning. Proper installation and calibration are essential to realize potential benefits.

What Are The Top-Rated Exhaust Systems For A 6.7 Cummins Engine?

Top-rated exhaust systems for a 6.7 Cummins engine include options from well-known brands like aFe Power, Banks Power, and MBRP. These systems are designed to enhance performance by improving exhaust flow, increasing horsepower, and providing a deeper, more aggressive sound. For example, aFe Power’s BladeRunner or MBRP’s Pro Series are frequently recommended for their durability and efficiency. Additionally, many users prefer Banks Power exhausts due to their reliable build quality and noticeable power gains. When choosing an exhaust system, consider factors like material (stainless steel preferred), sound preference, and compatibility with your vehicle’s setup to ensure optimal performance and longevity.

How Does An Aftermarket Exhaust Improve The Performance Of A 6.7 Cummins?

An aftermarket exhaust improves the performance of a 6.7 Cummins engine by enhancing exhaust flow and reducing backpressure. This allows the engine to expel gases more efficiently, which leads to better combustion and increased horsepower and torque. Improved airflow also helps the turbocharger operate more effectively, boosting overall engine responsiveness and power delivery. Additionally, aftermarket exhaust systems often feature larger diameter piping and high-quality materials that reduce weight and improve durability. This combination not only enhances engine performance but can also result in a more aggressive exhaust sound, giving the 6.7 Cummins a sportier and more refined tone.

Conclusion

Choosing the best exhaust for 7 Cummins involves balancing improved performance, sound quality, and durability against factors like installation complexity and budget.

High-quality exhaust systems can enhance horsepower and torque, provide a deeper, satisfying engine tone, and offer better fuel efficiency. However, some options may require professional installation or additional modifications to fit properly. This makes the best exhaust for

7 Cummins ideal for truck owners who value both performance gains and reliable construction, especially those using their vehicles for towing or heavy-duty tasks. Considering your specific needs and preferences will help address any remaining concerns. Ultimately, selecting a well-reviewed exhaust tailored for the

7 Cummins ensures a worthwhile upgrade without compromising dependability.