MBRP Turbo Outlet 3" Performance Duramax LB7 Down Pipe

2001-2004 GM 6.6L Duramax LB7
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MBRP Performance Exhaust
XDP Part Number:
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Duramax LB7 owners now have the ability of connecting the turbo and aftermarket down-pipe back exhaust system by removing the restrictive stock pipe. 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" 16 Gauge Aluminized Tubing
  • 1/2" Thick Turbo Flange
  • Satin Black Ceramic Coating
  • High-Heat Thermal Wrap
  • Machined lower V band flange



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

Mfg. Number:

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

(55 Ratings, 7 Reviews) Average Rating:
Cali Emission Truck Owners!!!!
Michael Meyer - LEVEL X (Las Vegas, NV) 12/2/2015 5:10 PM
This downpipe will fit both Cali and Federal emission trucks. If you're unsure on your model, order this downpipe. On 1 truck we had to drill a hole out bigger, and on others, it seemed to fit perfect. Includes gasket for both models as well. Works great behind my Fleece turbo.
dont buy if you have CA lb7
Kris (CA. ) 4/5/2014 2:21 PM
I have a California 2004 lb7 and i bought this hoping the install would be fairly easy. Turns out this piece is not meant for CA trucks with exhaust recirculation so i had to modify the downpipe by cutting and sanding until it cleared the recirculation pipe. then, one hole refused to line up so i had to make the hole bigger with a die grinder.
01 gmc lb7
Thomas Boley (Deerfield, WI) 2/24/2013 3:37 PM
This product is great turbo used to start spooling around 1900 now it's about 1250. Egt's dropped tremendously and the turbo is much more pronounced. Excellent product everyone who has a duramax should have one.
well worth the money
matt g (lock haven, pa) 5/4/2012 8:45 PM
egts drop fast, turbo spools faster, quicker acceleration(seat of the pants), little rough on install, found if you remove bracket on back of pass. head pipe drops right in.
01 lb7 longbed 4x4
colton (tx) 3/4/2012 4:25 PM
man did product is alwsome!!!!!!!!! with this down pipe and all the performace parts i put on my truck,volant intake,mbrp turbo down pipe, mbrp exaust, banks power wastegate,duramaxmileage tunner i went from 17mpgs stock to 22 mpgs if drive fast but if i drive sensabile i get amazing 23mpngs but now i need to get iardog 165 pgh fuelsystem for more power fuel economy.