MBRP S6004AL – 4″ Aluminized Downpipe back exhaust – 2001-2007 Duramax 6.6L

Code: S6004AL


In Stock


2001-2007 Duramax 4″ Down Pipe Back Exhaust – With Muffler (S6004AL)


Built from heavy duty aluminized steel MBRP’s Installer Series exhaust systems offer a value price without compromising on the quality build to every component. While the seams are a major point of rust through with some budget systems, MBRP’s fully sealed tubing adds years to your system. Constructed to the same specifications as our top of the line Pro Series. we back this with a 3-year warranty. MBRP exhaust systems are as much fun to install as they are to drive with on your truck, Bolt-on, no weld design makes installing this on your truck a no hassle project. Everything is a direct fit to the OEM hangers, and you get all the clamps and parts you will need in one box. Performance is one thing but at MBRP they believe that appearance and sound are just as important, every MBRP performance exhaust system has been specifically tuned to get the optimal sound from your pickup.



  • 4″ Aluminized Steel Construction
  • Downpipe Back Exhaust System
  • Rich, Mellow Exhaust Note
  • Installs with Common Hand Tools
  • with muffler

Fits: 2001-2007 GM LB7, LLY, & LBZ w/ 6.6L Duramax

Additional information

Weight98 lbs

Model Specific

This part fits select models

Chev/GMCDuramax 6.6 LB72001
Chev/GMCDuramax 6.6 LB72002
Chev/GMCDuramax 6.6 LB72003
Chev/GMCDuramax 6.6 LB72004
Chev/GMCDuramax 6.6 LLY2004
Chev/GMCDuramax 6.6 LLY2005
Chev/GMCDuramax 6.6 LLY/LBZ2006
Chev/GMCDuramax 6.6 LLY/LBZ2007
Chev/GMCDuramax 6.6 LMM2007