Hi everyone, this time we’re reviewing the best exhaust systems for Cummins 5.9L engines. These engines need top performance parts, and these parts come in the aftermarket. Sure you can rely on the original factory parts, they produce the best specifications for daily use. However, if you are into rough and ready racing, or extremely heavy hauling 24/7, you might want to spruce up your ride.

The 5 Best Exhausts for 5.9 Cummins:

  1. Performance 4″ Aluminized Steel Turbo Back Exhaust Pipe Kit System For 04.5-07 Dodge Ram 2500 3500 Cummins 5.9L Turbo Diesel Pickup Truck – the best exhaust for 5.9 Cummins
  2. aFe 49-02002NM ATLAS Aluminized Steel Turbo-Back Exhaust System for Dodge Diesel Trucks L6-5.9L
  3. Diamond Eye 4″ Stainless Turbo-Back Exhaust W/ Muf 89-93 Cummins 5.9L 4WD Only
  4.  MBRP Single Side Exit Cat-Back System
  5. MBRP Aluminum Cat-Back Single Side-Exit Exhaust
 Product namePhotoFeaturesProsMore information
1. Performance 4" Aluminized Steel Turbo Back Exhaust1. Performance 4This is the Performance 4" Aluminized Steel Turbo Back Exhaust Pipe Kit System

  • Front Pipe Included

  • Aluminized Steel

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2. aFe 49-02002NM ATLAS Aluminized Steel Turbo-Back Exhaust2. aFe 49-02002NM ATLAS Aluminized Steel Turbo-Back Exhaust System for Dodge Diesel Trucks L6-5.9LThis is the aFe #49-02002NM ATLAS Aluminized Steel Turbo-Back Exhaust System

  • OE style band clamps

  • 2-Piece Tailpipe

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3. Diamond Eye 4" Stainless Turbo-Back Exhaust3. Diamond Eye 4This is the Diamond Eye 4" Stainless Turbo-Back Exhaust with muffler

  • Muffler

  • Stainless Steel SS409

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4. MBRP Single Side Exit Cat-Back System4. Diamond Eye K4235A Turbo-Back Exhaust KitHigh-quality materials; rich but mellow sound

  • Made of stainless steel

  • Replaces the stock exhaust

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5. MBRP Aluminum Cat-Back Single Side-Exit Exhaust5. MBRP Aluminum Cat-Back Single Side-Exit ExhaustInexpensive but made to MBRP’s standards

  • Cost-effective exhaust

  • Fits Quad Cab/Mega Cab models as well

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6. Diamond Eye K5216A-RP Turbo-Back Exhaust Kit6. Diamond Eye K5216A-RP Turbo-Back Exhaust KitThis is the Diamond Eye K5322A Turbo Back Exhaust Kit

  • Muffler

  • 5” Aluminized Steel

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7. MVP 4" Aluminized Steel Turbo Back Exhaust System Kit For 98-02 Ram Cummins 5.9L Diesel7. Diamond Eye K5216A-RP Turbo-Back Exhaust KitThis is the MVP Performance Race 4" Turbo Back with Downpipe Down Pipe Exhaust System Kit

  • Only exhaust pipes

  • Stainless Steel SS409

  • 4” Down Pipe

  • 5” Aluminized Steel

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8. MBRP S6108P Single Side Cat-Back Exhaust System8. MBRP S6108P Single Side Cat-Back Exhaust SystemThis is the MVP Aluminized Steel 4" Turbo Back Exhaust System Kit

  • Straight Pipe

  • Aluminized Steel

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9. Diamond Eye ‘04.5-'07 Dodge Ram Cummins 5.9L Diesel 2500/3500, 4" Aluminized Turbo Back Single9. Diamond Eye ‘04.5-'07 Dodge Ram Cummins 5.9L Diesel 2500/3500, 4This is the MBRP S6108P Single Side Cat-Back Exhaust System

  • "600/610" Mounting to the catalytic converter

  • Stainless Steel SS409

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REVIEWS YOU CAN TRUST 

All the information and opinions you find on Mechanicguides.com come from a team of automotive journalists and an independent mechanic, Steve “Whip” Whipple with 11 years of auto industry experience. We look at the latest market research, talk to experts, and draw from our own practical experience to bring you reviews and guides that reflect what you’ll encounter in your garage. For more information about the team, see here.

Pimping up your 5.9L Cummins engine with an aftermarket exhaust system will definitely add some performance improvements as well as give you that loud rumbling roar that will make late night stealth rides a thing of the past (Unless you install a muffler).

Yup, you will no longer be driving around in a nice quiet suburban attitude, it’s time to get all Republican and have a loud-mouthed red-neck exhaust system, and I say this with pride.   On the other hand, if you live in the suburbs and you need to keep quiet, consider a muffler, it will help you even if you are a loud person.

There are many brands out there, and you can get some great made in the USA models.

Best Exhaust for 5.9 Cummins Reviews:

1. Performance 4″ Aluminized Steel Turbo Back Exhaust Pipe Kit System For 04.5-07 Dodge Ram 2500 3500 Cummins 5.9L Turbo Diesel Pickup Truck – the best exhaust for 5.9 Cummins

Performance 4″ Turbo Back Dual Exhaust System
  • 4″ Turbo Back Dual Performance Exhaust System (Front Pipe Included)
  • 2004.5 to 2007 Dodge Ram 2500/3500 Cummins 5.9L 600/610 Only
  • Excludes Older 2004 Models & Newer 2007 Model With 6.7L Engine
  • Will Fit Extended & Crew Cab, Short Bed or Long Bed
  • Extension Pipe May Require Trim-To-Length, Depending On Wheelbase
  • Two 5″ Polished Stainless Steel Tips & Muffler Included
  • Mandrel Bent Tubing For Maximum Flow & Performance
  • Simple Bolt On Installation, Clamps & Hangers Included
  • Aluminized Steel. Top Quality Product & Great Value
  • Professional Installation Recommended

This is a 4” turbo back type exhaust system, and you mount it directly to the turbo unit providing maximum diameter and reduced band degree angles with a mandrel bent pipe. This system provides the lowest exhaust gas temperatures and maximum exhaust flow from your system.

This kit is suitable for: 2004.5 to 2007 Dodge Ram 2500/3500 Cummins 5.9L Turbo Diesel trucks

In some cases, you might need to trip the tailpipe extension. This kit is made of aluminized steel and does not include the muffler or tip.

2. aFe 49-02002NM ATLAS Aluminized Steel Turbo-Back Exhaust System for Dodge Diesel Trucks L6-5.9L

aFe 49-02002NM ATLAS Aluminized Steel Turbo-Back Exhaust
SPECIFICATIONS:

  • Exhaust Type: Turbo-Back
  • Exit Position: Rear
  • Exit Style: Straight
  • Inlet Inside Diameter: 4.000 in.
  • Material: Aluminized Steel
  • Outlet Outside Diameter: 4.000 in.
  • Tail Pipe Diameter: 4.000 in.
  • Tail Pipe Material: Aluminized Steel
  • Tip Diameter: N/A
  • Tubing Diameter: 4.000 in.
  • WARNING CA Proposition 65: Yes
  • WARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov

 

FEATURES:

  • Engineered To Perform In The Most Extreme Environments
  • Aluminized Steel Construction
  • Maximum Flow
  • Increased HP And Torque
  • Lowers EGTs
  • Hassle Free Installation

This is new ATLAS exhaust system; this model is made of 4” mandrel bent aluminized steel and has bayonet style hangers and a 2-piece style tailpipe and has no muffler. (NM)

This kit is suitable for: 2003 to 2004 Dodge Ram 2500/3500 Cummins 5.9L Turbo Diesel trucks

ATLAS exhaust systems give you a 2-piece tailpipe design which provides a perfect. This provides adjustability at the tailpipe section, and use factory mounting locations so its quick and easy to install.

3. Diamond Eye 4″ Stainless Turbo-Back Exhaust W/ Muf 89-93 Cummins 5.9L 4WD Only

Diamond Eye 4″ Stainless Turbo-Back Exhaust

Specifications:

  • Exhaust System Type: Turbo-Back
  • Exhaust Tubing Material: 409 SS
  • Exit Location: Single Passenger Side
  • Main Tubing Diameter: 4″
  • Exhaust System Sound: Moderate

Features:

  • High quality at an affordable price
  • Expertly made from premium materials
  • Built to match your exact requirements

This is a 4” stainless steel, turbo back type exhaust system with muffler, and it is mounted directly to the turbo unit providing maximum diameter and reduced band degree angles with a mandrel bent pipe. This system provides the lowest exhaust gas temperatures and maximum exhaust flow from your system. It also comes with a muffler, so you can reduce the sound levels to enjoy a stealthier drive at night.

This kit is suitable for: 1989 to 1993 Dodge Ram 2500/3500 Cummins 5.9L Turbo Diesel trucks

4. MBRP Single Side Exit Cat-Back System

MBRP Single Side Exit Cat-Back System

XP Series Exhaust System

  • 2004.5-2007 Dodge 2500/3500 for Cummins 5.9L
  • Single 4″ Side Exit
  • Cat-Back

 

A high-quality exhaust system, the MBRP Single Side Exit Cat-Back Exhaust System, is made of T409 stainless steel and has a T-304 steel exhaust tip. This means it’s going to last longer and fare better than most other cheaper exhausts. But that’s not where its advantages end. It’s a single side-exit unit that can be fitted to the catalytic convertor.

In terms of the exhaust note, it’s said to have a rich, mellow one. It’s perfect if you don’t want an excessively harsh exhaust sound but are done with the unimpressive stock exhaust system. In addition to that, mentions MBRP, you can also get a power increment of up to 18 hp since the exhaust enables the engine to perform better.

It can be fitted straight in place of the original exhaust with common tools. The factory hangers can be utilized, and you won’t need to do any modifications to accommodate the MBRP system. It won’t require you to do any welding either. On the whole, the installation should ideally take about two hours.

It’s backed by a lifetime warranty and is compatible with the later-model 5.9 Cummins Dodge Ram trucks (2004.5 – 2007). You can check with the seller about the warranty and any other questions regarding finer compatibility. Users are happy with the way it fits and sounds. Owing to better materials, it’s more expensive than other aluminum models, but it’s a one-time investment, so it’s well worth it, we feel.

5. MBRP Aluminum Cat-Back Single Side-Exit Exhaust

MBRP S61180PLM 5" Aluminum Cat Back, Single Side Exit (No Muffler) for Dodge Diesel
  • Fits 2004-2007 Dodge 2500/3500 Cummins "600/610"
  • 5" exhaust system
  • Large radius mandrel bends
  • Free flow muffler design
  • Two piece tail-pipe (tip not included)

If you’re looking for a more cost-effective exhaust system from a reputed brand like MBRP, the MBRP Aluminum Cat-Back Single Side-Exit Exhaust is worth checking out. It’s a 5-inch exhaust system made for the 2004 – 2007 5.9 Cummins engined Dodge Ram trucks.

Made of aluminized steel, the exhaust system has a 5-inch tubing, large-radius mandrel bends, and a free-flow muffler design. The two-piece tailpipe doesn’t include a muffler or an exhaust tip. You can purchase the latter from MBRP for an improved and complete look.

It’s one of the more affordable options, and the difference between this and other ‘Pro’ series models is the use of aluminized steel instead of higher quality material like stainless steel. However, it still sounds decent and benefits from good craftsmanship.

It can fit the Quad Cab Long Bed or Mega Cab models, but it can be trimmed as per your requirements as well. To ensure you get the exhaust that fits your truck perfectly, drop the seller a message before buying and enquire about the correct model. Confirm with the seller about the warranty too.

6. Diamond Eye K5216A-RP Turbo-Back Exhaust Kit

Diamond Eye K5216A-RP Turbo-Back Exhaust Kit
  • FOR 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 & 2002 -DODGE 5.9L CUMMINS DIESEL 2500/3500 (ALL CAB AND BED LENGTHS)
  • 5′ ALUMINIZED – PERFORMANCE DIESEL EXHAUST KIT
  • TURBO BACK SINGLE – 4′ DOWN PIPE

This is a 5” aluminized steel with 4” downpipe turbo back type exhaust system, and it is mounted directly to the turbo unit providing maximum diameter and reduced band degree angles with a mandrel bent pipe. This system provides the lowest exhaust gas temperatures and maximum exhaust flow from your system.

This kit is suitable for: 1994 to 2002 Dodge Ram 2500/3500 Cummins 5.9L Turbo Diesel trucks

Instructions

7. MVP 4″ Aluminized Steel Turbo Back Exhaust System Kit For 98-02 Ram Cummins 5.9L Diesel

No products found.

This is a 4” turbo back type exhaust system with a front pipe, and it is mounted directly to the turbo unit providing maximum diameter and reduced band degree angles with straight pipe design. This system provides the lowest exhaust gas temperatures and maximum exhaust flow from your system.

This kit is suitable for: 1998 to 2002 Dodge Ram 2500/3500 Cummins 5.9L Turbo Diesel trucks

In some cases, you might need to trip the tailpipe extension. This kit is made of Aluminized steel and does not include the muffler or tip.

8. MBRP S6108P Single Side Cat-Back Exhaust System

MBRP S6108P Single Side Cat-Back Exhaust System

SPECIFICATIONS:

  • Exhaust Type: Single
  • Exit Position: Side
  • Exit Style: Turn Down
  • Inlet Inside Diameter: 4.000 in.
  • Material: Aluminized Steel
  • Muffler Count: 1
  • Muffler Type: Straight-Through
  • System Type: Cat Back
  • Tail Pipe Diameter: 4.000 in.
  • Tip Diameter: N/A
  • Tubing Diameter: 4.000 in.
  • WARNING CA Proposition 65: No

This is a single side cat back dodge turbo back type exhaust system, and it is mounted directly to the turbo unit providing maximum diameter and reduced band degree angles with a mandrel bent pipe. This model will drop your exhaust gas temperature by up to 200°F .

This kit is suitable for: 2004.5 to 2007 Dodge Ram 2500/3500 Cummins 5.9L Turbo Diesel trucks

In some cases, you might need to trip the tailpipe extension. This kit is made of SS409 stainless steel but does not include the muffler or tip.

Instructions

9. Diamond Eye ‘04.5-’07 Dodge Ram Cummins 5.9L Diesel 2500/3500, 4″ Aluminized Turbo Back Single

Diamond Eye ‘04.5-’07 Dodge Ram Cummins 5.9L Diesel 2500/3500, 4″ Aluminized Turbo Back Single

SPECIFICATIONS
Title Aluminized

FITS THE FOLLOWING APPLICATIONS

  • 2004 Dodge Ram 2500 , 5.9L (L6) 4 in.- Single- Single Pass. Side Exit- Off-Road- Incl. Muffler/Exhaust Pipe/Clamps- Aluminized– Not For Sale In States With C.A.R.B Equivalency Standards
  • 2004 Dodge Ram 3500 , 5.9L (L6) 4 in.- Single- Single Pass. Side Exit- Off-Road- Incl. Muffler/Exhaust Pipe/Clamps- Aluminized– Not For Sale In States With C.A.R.B Equivalency Standards
  • 2005 Dodge Ram 2500 , 5.9L (L6) 4 in.- Single- Single Pass. Side Exit- Off-Road- Incl. Muffler/Exhaust Pipe/Clamps- Aluminized– Not For Sale In States With C.A.R.B Equivalency Standards
  • 2005 Dodge Ram 3500 , 5.9L (L6) 4 in.- Single- Single Pass. Side Exit- Off-Road- Incl. Muffler/Exhaust Pipe/Clamps- Aluminized– Not For Sale In States With C.A.R.B Equivalency Standards
  • 2006 Dodge Ram 2500 , 5.9L (L6) 4 in.- Single- Single Pass. Side Exit- Off-Road- Incl. Muffler/Exhaust Pipe/Clamps- Aluminized– Not For Sale In States With C.A.R.B Equivalency Standards
  • 2006 Dodge Ram 3500 , 5.9L (L6) 4 in.- Single- Single Pass. Side Exit- Off-Road- Incl. Muffler/Exhaust Pipe/Clamps- Aluminized– Not For Sale In States With C.A.R.B Equivalency Standards
  • 2007 Dodge Ram 2500 , 5.9L (L6) 4 in.- Single- Single Pass. Side Exit- Off-Road- Incl. Muffler/Exhaust Pipe/Clamps- Aluminized– Not For Sale In States With C.A.R.B Equivalency Standards
  • 2007 Dodge Ram 3500 , 5.9L (L6) 4 in.- Single- Single Pass. Side Exit- Off-Road- Incl. Muffler/Exhaust Pipe/Clamps- Aluminized– Not For Sale In States With C.A.R.B Equivalency Standards

This is the 4″ Aluminized Turbo Back Single Exhaust Kit (Quiet Tone) turbo back type exhaust system, and it is mounted directly to the turbo unit providing maximum diameter and reduced band degree angles with a mandrel bent pipe. This is the exhaust system for stealth driving.

This kit is suitable for: 2004.5 to 2007 Dodge Ram 2500/3500 Cummins 5.9L Turbo Diesel trucks

In some cases, you might need to trip the tailpipe extension. This kit is made of SS409 stainless steel but does not include the muffler or tip.

Instruction Sheet

What’s the best exhaust for 5.9 Cummins?

Our top pick for the best exhaust for 5.9 Cummins is the Performance 4″ Turbo Back Dual Exhaust system.

Replacing Your System

If you decide on replacing your old system with a new one, factor in the following features and functions:

Material: pick either aluminized steel or S409.

Sound: for loud noises, getting that guttural roar, by a system without a muffler. If you want silence, then buy a system with a muffler. (Simple)

Replacing: You can either take it into your mechanic/garage, or you can replace it yourself. If you want to replace it by yourself, check out this easy Wiki-how site for replacing a muffler system on your Cummins 5.9L truck.

Yes, it states 6.7L, but the process and method for replacing are identical.