Best Exhaust For 6.7 Cummins

Off-Road Bandit TeamMar 18, '21

The deep, throaty growl of a 6.7 Cummins turbo-diesel engine is enough to turn heads. But what if you could enhance that guttural snarl while increasing the performance of your truck?

Well, it’s time to enter the world of aftermarket exhaust. With improvements in acceleration, fuel economy, sound, and more, the benefits of exhaust for 6.7 Cummins Ram trucks are clear.

How to Choose an Exhaust for 6.7 Cummins

Exhausts for 6.7 Cummins come in a wide variety of options for different budgets and preferences. But before you buy an exhaust system, familiarize yourself with some of the most important aspects of an exhaust system. By doing so, you can prioritize which features you want, leading to better satisfaction with your purchase.

Exhaust Diameter

The diameter of the exhaust pipes in your system may be cause for concern. With pipes that are too narrow, you won’t get as much exhaust flow, which may stifle the engine. As a general rule, 4-inch diameter pipes are the minimum you should use on your 6.7 Cummins, although some swear by 5-inch diameter to increase airflow and reduce backpressure, it's not necessary.

Mandrel-Bent Pipes

Mandrel-bent pipes are the result of a steel rod inserted into piping as its bent. As a result, the pipes are typically more durable and can maximize airflow/exhaust flow out of the system while reducing backpressure. While mandrel bending isn’t a necessity, it’s a nice feature and sign of a quality system.

Life Span

How long the aftermarket exhaust for your 6.7 Cummins lasts is highly dependent on the construction material of the exhaust system. That said, you’ll typically see two types: aluminized steel and stainless steel. Aluminized steel is the far more affordable of the two but won’t last nearly as long while stainless steel provides maximum longevity, albeit at a steeper price point.

Review of the Best Exhausts For 6.7 Cummins

Best Overall: Banks 4" Monster Exhaust 49775

Pros

  • Black Or Chrome Tip To Fit Your Styling Needs
  • 4” Thickness For Maximum Exhaust Flow
  • Five-year Warranty
  • Adjustable Clamp To Prevent Tailpipe Tarnishing
  • Comes With Detailed Instructions For Easier Installation

Cons

  • Requires Specialized Tools For Installation
  • Only A Subtle Upgrade To Engine Tone

What Recent Buyers Report

Recent buyers report the utmost satisfaction with the Banks 4” Monster Exhaust System. While some owners report that the installation is somewhat difficult, the overall consensus is that it makes a difference when hammering the accelerator. Furthermore, its single-tip setup provides an excellent aesthetic without increasing backpressure or reducing exhaust flow.

Why It Stands Out to Us

This exhaust system stands out thanks to Banks proprietary CoolCuff design. This engineering allows the system to draw in cool air, which reduces exhaust temperature. As a result, you won’t experience backpressure or airflow losses that can reduce your overall performance. And backed with a five-year warranty, you get the peace of mind not afforded by other aftermarket exhaust systems.

Bottom Line

Affordably priced, durable, and offering improved performance, the Banks 4” Monster Exhaust System is the ideal exhaust for 6.7 Cummins owners. And with a stylish chrome or black tailpipe, you can add to the aesthetic of your truck while also enjoying a noticeable uptick in your truck’s acceleration and performance.

Runner-up: MBRP 4" Filter-Back AL Series Cool Duals: '13-18 Ram 2500/3500

Pros

  • Dual Tailpipe For Enhanced Style
  • Made From T409 Stainless Steel For Maximum Durability
  • Lifetime Warranty Of Manufacturing Flaws
  • Excellent Value For The Price
  • Simple, Easy Bolt-on Installation

Cons

  • Expensive Compared To Some Other Alternatives
  • Dual Tailpipe Is Only For Aesthetics; Has Little To No Performance Enhancement

What Recent Buyers Report

Overall, the MBRP 4” Filter-Back AL Series Cool Duals Exhaust system flourishes, providing a mix of style and a better sound than the stock system. In addition, the bolt-on system is simpler than other options, requiring no welding or modifications. However, others state that the dual-exhaust doesn’t improve the overall performance of the vehicle, making it solely an aesthetic upgrade—one that some may consider pricey.

Why It Stands Out to Us

Lifetime warranties aren’t available just anywhere. So buyers that aren’t familiar with MBRP products may find that this gives them a bit of solace. Furthermore, a dual tailpipe setup can offer a style upgrade that single tailpipes can’t match. Throw in stainless steel construction, and the MBRP exhaust may just be the perfect mix of durability and overall style.

Bottom Line

Although it’s more expensive than alternatives, the MBRP 4” Filter-Back AL Series Cool Duals Exhaust System does just what it’s supposed to. It provides an upgrade over the OEM with quick, easy installation. Budget-conscious buyers may find more value elsewhere.

Best for the Money: MBRP 4" Filter-Back AL Series Single Exit: '07-12 2500/3500

Pros

  • Single-tip Exhaust Isn’t Gaudy, Giving A Streamlined Look That Some Cummins Owners Will Appreciate
  • Easy Bolt-on Installation Without The Need For Modification Or Welding
  • Corrosion-resistant Coating
  • Boost In Horsepower And Torque
  • Three-year Warranty

Cons

  • Aluminized Construction Can Rust If Damaged Or Exposed To Extreme Weather
  • Not As Loud As Dual Exhaust Setups

What Recent Buyers Report

Most recently, buyers report that the MBRP 4” Filter-Back AL Series Single Exit is a top-notch exhaust for the money. In geographic locations without extreme weather, the exhaust is durable and adds a noticeable uptick in engine growl and performance. However, many buyers that experience heavy rain or snow state that this exhaust can rust drastically.

Why It Stands Out to Us

Novice DIYers will love that this exhaust system is a bolt-on, going from box to truck in just about an hour or two. And despite its problems with rusting in harsh weather, the aluminized steel can stand up to a beating in more hospitable climates, giving buyers excellent value for the price.

Bottom Line

With a shockingly low price tag, a three-year warranty, and improved performance, the MBRP 4” Filter-Back AL Series Single Exit is a bargain buy that’s sure to please most buyers. Those in wintry or rainy climates may want to opt for a system with stainless steel to ensure maximum longevity.

Editor's Pick: MBRP 4" Filter-Back XP Series Single Exit / Dual Tip: '13-18 2500/3500

Pros

  • Xp Series Offers Premium Stainless Steel Construction Of Both Pipes And Tailpipe
  • Lifetime Warranty
  • Dual Exhaust Tips For Enhanced Styling
  • Quick And Simple Bolt-on Installation (2 Hours)
  • Full, Deep Sound When Idling And Accelerating

Cons

  • Susceptible To Rust In More Extreme Climates

What Recent Buyers Report

The MBRP 4” Filter-Back XP Series Single Exit / Dual Tip shines as an excellent option for 6.7 Cummins drivers. Overall, it provides the ideal mix of torque/horsepower upgrade with an excellent aesthetic, according to recent buyers. However, it may not stand up to harsher weather, especially without routine cleaning.

Why It Stands Out to Us

MBRP is a harbinger of great exhaust systems, and this one is no different. With easy installation, an excellent warranty, and looks to match, few other exhaust systems can compete for the price.

Bottom Line

Thrifty buyers will love the perks and value they get from the MBRP 4” Filter-Back XP Series Single Exit / Dual Tip exhaust system. And while rusting may be an issue for some, most 6.7 Cummins owners will love this exhaust system overall.

Honorable Mention: MBRP 5" Filter-Back AL Series Single Exit: '13-18 2500/3500

Pros

  • 5-inch Pipes For Maximum Exhaust Flow
  • Easy On The Wallet Compared To Other Exhausts
  • Fits With OEM Hangers Without The Need For Mods
  • Aluminized Steel Construction Is Both Lightweight And Durable

Cons

  • Doesn’t Have The Same Allure As A Dual-exhaust System

What Recent Buyers Report

Recent buyers report that the MBRP 5” Filter-Back AL Series Single Exit exhaust is an excellent purchase in terms of value and performance. And while rusting is sometimes an issue with aluminized steel, routine cleaning and maintenance can make this a durable, long-lasting purchase according to recent purchases by 6.7 Cummins owners.

Why It Stands Out to Us

With quality products made to last MBRP is a trusted name in the exhaust industry. In particular, the 5-inch pipe diameter sets this affordable exhaust ahead of similar alternatives, providing maximum airflow without maximizing the price.

Bottom Line

If you’re searching for a 5-inch exhaust without breaking the bank, the MBRP 5” Filter-Back AL Series Single Exit should get the job done. But if you’re worried about corrosion, you may want to opt for a stainless steel system.

Deleted Cummins Exhaust Tone vs. DPF-Installed - Comparison Overview

Deleting a Cummins exhaust means eliminating some of the emissions controls either through the truck’s onboard computer or changing the exhaust. While this may void the warranty (and might be illegal in some states), it can improve the overall exhaust tone to a more aggressive growl coveted by many Dodge Ram owners.

Because of the concerns with voiding warranties, the inability to pass emissions tests, or the illegalities of deleting exhaust systems, most drivers avoid it. Instead, they retain the DPF-installed (diesel particulate filter), OEM exhaust. Unfortunately, getting a louder growl out of a truck with a DPF exhaust isn’t easy; some owners say it’s impossible.

As a result, you’ll want to make sure you don’t void your warranty by removing the DPF-installed exhaust or changing any other aspect of your vehicle by the deletion process. But if you find that you can successfully remove it, opting for a cat-back exhaust may give you the enhanced sound you desire.

Don’t Exhaust Yourself: Go With a Quality System to Get the Most Out of Your 6.7 Cummins

Although DPF-installed systems can limit the growl associated with bigger engine displacement and turbo-diesel options, aftermarket exhausts provide everything you need in one package. With an aggressive growl and improved performance all, while meeting emissions standards, you can get the most out of your 6.7 Cummins turbo-diesel.

People Also Ask

Exhaust systems can often be a difficult concept for newbies and even intermediate DIY mechanics simply due to the difficulty of installation or engine concepts. That’s why we’ve put together this list of questions people also ask for exhausts for 6.7 Cummins turbo-diesel Ram trucks. By understanding more about the system, you can position yourself to make a better purchase that works for your needs.

How does the exhaust brake work on the 6.7 Cummins?

The 6.7 Cummins exhaust brake restricts the flow of exhaust gases, creating resistance (backpressure) within the engine. In this process, the crankshaft and the wheels can slow, allowing the truck to stop more quickly. This is an engageable feature on 6.7 Cummins trucks. But some drivers keep it on at all times for precision braking on steep grades or as an added safety feature for precision braking.

Does a DPF back exhaust make a difference?

Differences in power, flow, and sound are extremely limited due to the restricted nature of DPF systems. So a DPF-Back exhaust will not make much of a change here, no.