MBRP 4" PLM Series Turbo-Back Exhaust System S6126PLM

2004.5-2007 Dodge 5.9L Cummins (All Cabs & Beds)
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MBRP Performance Exhaust
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XDP - MBRP Authorized Online Retailer XDP is a MBRP Factory Authorized Online Retailer ID# 600207727. We would like you to shop with confidence knowing your purchase is covered by the manufactures warranty.   

The Best Systems Start with the Best Materials

Built from heavy duty aluminized steel our PLM Series exhaust systems offer a value price without compromising on the quality built into every component. While the seams are a major point of rust through with some budget systems our fully sealed tubing adds years to your system. Constructed to the same specifications as our top of the line Pro Series we back this line with a 1 Year Warranty.

Built to Perform
You count on your truck to tow all of your gear to where you want it. With your MBRP performance exhaust you can make that happen with up to 18 HP more horsepower and 28 ft/lb more torque. Give your truck more pulling power and much improved throttle response with an MBRP diesel exhaust system. Our systems are so much more efficient, it will be easy to see what your truck can really do.

Minimize Backpressure

The secret to getting more out of your diesel engine is to give it lots of cool, clean air. The only way that you can get fresh air in is to get the hot air out. From the spiral louvered high flow muffler to the fully mandrel bent tubing to minimal bend degree angles, your MBRP performance system gets exhaust out fast. Drop exhaust gas temperature by up to 200ºF and set the stage for all the performance you want. An MBRP performance exhaust system is the starting point to getting the most from cold air intakes, programmers, modules and downloaders.

Easy Installation
MBRP systems are as much fun to install as to drive with on your truck. Bolt-on, no weld design makes installing this on your truck a no hassle one and a half to two hour project. Everything is direct fit to the OEM hangers and you get all the clamps and parts you will need, all in one box, no matter what configuration of truck you have.

Sound & Style

Performance is one thing but at MBRP we believe that appearance and sound is just as important. Every MBRP performance exhaust system has been specifically tuned to get the optimal sound from your pickup. With our unmistakable styling, there's no question that you have the hottest exhaust on the road - MBRP.


  • 4" Aluminized Steel Construction
  • Turbo-Back Exhaust System
  • No Muffler - "Straight Pipe"
  • Tip Not Included
  • 1 Year Warranty

Application Note: All Cabs & Beds applies to Dodge Ram 2500/3500 Pickups. This system is not designed for use on Cab & Chassis models.

Mfg. Number:

Customer Reviews - Include your order number for a chance to win a $100 GiftCard

(11 Ratings, 9 Reviews) Average Rating:
Not to bad
Jason (Virgina beach) 11/25/2016 11:06 PM
Install want to terribly difficult, but turbo down pipe does not alow the hanger from the pipe to line up with the hole on the hanger on the trans. And pretty sure I got the kit for the mega cab, I have ano entire pipe section left over bc it would have made it entirely to long for the truck. But other than a small dent it sounds great and works well.
Great deal
Tim (CT) 11/8/2013 4:33 PM
Definitely louder then stock but well worth the temp. drop. Also have already seen a 3 mpg increase... And don't forget a nice tip it completes the look! Great product keep it up MBRP!!!
Dont' forget a tip!
Guardian (Westport, WA) 4/6/2013 2:49 PM
Install went pretty smooth on my 06 QCSB. Fired it up and it sounded too raspy for what I wanted. Bought a nice tip for it and now it sounds amazing at idle and all through the RPM's. If you really want to annoy the neighbors, step on the go pedal and it resonates LOUD through a certain RPM range and load. Would recommend to anybody that wants a loud vehicle.
Factory worker
Dave Lookabaugh (Illinois) 9/16/2011 6:46 AM
Great exhaust. It only took about an hour and a half to install in the driveway. That is including getting the old one off. Only complaint is that it is vey loud which is cool for about a day. Sounds great, but I'm ordering the muffler. Very good quality, had a few dented ends but a hammer made quick work of that.
jc (VA) 12/24/2010 3:00 PM
This pipe gave a sound that i was looken for deep and loud nothin like given everyone a wake up call worth every dime.