MBRP Turbo Outlet 3" Performance Duramax Down Pipe

2004.5-2010 GM 6.6L Duramax LLY/LBZ/LMM
MBRP Performance Exhaust
Mfg. Number:
XDP Part Number:
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XDP has teamed up with MBRP to help produce the missing link in the Duramax Exhaust System. Now Duramax LLY/LBZ/LMM owners have the ability of connecting the turbo and aftermarket down-pipe back exhaust system by removing the restrictive stock pipe pictured below. The MBRP down pipe provides a smoother flow from the turbo resulting in lower EGT’s and increased performance. The down pipe is a relatively easy install due to the precision bends that you’ve come to expect from MBRP.


  • 3" Mandrel Bent
  • Extra Thick Aluminized Steel
  • Satin Black Ceramic Coating 
  • High-Heat Thermal Wrap
  • Steel CNC Machined Flanges


  • Smoother Flow from Turbo
  • Reduced EGT’s
  • Increased Performance
  • Throatier Sound
  • Faster Turbo Spool-up

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

(74 Ratings, 7 Reviews) Average Rating:
almost no difference
dave (ca) 9/6/2015 5:25 PM
Very difficult to install,little to no change in sound. I understand that Duramax run quite and smooth but, i guess if you listen for it you can hear it.. I will say throttle response is noticeably better!
Well worth it!!
Mitch Mullen (Fort Collins, CO) 1/20/2015 1:34 AM
I am in the process of "unrestricting" the turbo as much as possible. I have done an intake, turbo inlet,and an Intercooler tube (hot side). I wanted to do the down pipe, which I had on my registry with XDP. Fortunately for me, the wife's dad got me the MBRP down pipe from my wish list. Let me tell you, the difference between the OE dp and the MBRP is ridiculous. The OE one is literally flattened to make room for the heat shield that's attached to it, and the tranny dip stick. After getting it out, it weighs a friggin ton!! Not to mention, it was kind of tricky to get out due to its unfortunate design. The MBRP literally slipped right in. I did it by myself, and after working it up to the turbo, I went to the top to secure it, and it was already sitting flush up to the turbo. After starting my truck, and just pulling from the driveway, I could feel the low range responsiveness. Stepped into it a little more, and could hear it even more!! The turbo sounds better too ;) anyway, great buy for the amount. It looks great, sounds great, and totally beats the OE dp.
Perfect fit
Brian (Wisconsin) 1/11/2015 9:12 PM
Didn't know if I could get the old one out or not but I did and this new one fit perfect. Great price and great product. Thanks
worked great
Alex Parker (central valley California ) 11/13/2014 4:42 AM
for me it was harder to remove the stock "downpipe" than installing this. Looks great, changed the sound (for better) lowered egt's. Well worth the price.
MBRP Turbo Down Pipe
Logan (Lakewood, CA) 11/5/2013 11:42 AM
This pipe arrived to my door fast and as promised. This MBRP is a quality part and fit like a glove. Stock part came off easy (use flex head ratchet wrenches) and use the assistance of a friend. Take off the two nuts for the dip stick but leave it in the trans. Just needs to wiggle around to get the old pipe out and the new one in. Take out the exhaust hangers and slide the pipe to the rear. Install time was just under 1:30. Now my exhaust sounds so much better at idle and comes alive past 2200 RPM. I have no idea about lower EGT's or how much HP was created, but yeah, it does that too. Without this Down Pipe installed you are pretty much wasting your money on all other upgrades as the stock one is very restrictive.