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High Flow Exhaust Manifolds & Up Pipes for 01-04 Chevy GMC 6.6L Duramax Diesel

US $549.99/ea
or Best Offer
No Interest if paid in full in 6 mo on $149+ with PayPal Credit*
Condition:
New
3 available36 sold
Bulk savings quantity 1
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Free Standard Shipping.
Located in: Elwood, Indiana, United States
Delivery:
Estimated between Fri, May 30 and Tue, Jun 3 to 94104
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30 days returns. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.
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eBay item number:315590048127
Last updated on Mar 14, 2025 18:04:05 PDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Mounting Style
Bolt-On
Items Included
Gasket, Mounting Hardware
Color
Polished
Manufacturer Part Number
DD-MLMRQLQR
Material
Stainless Steel
Vintage Part
No
Fuel Type
Diesel
Brand
Doctor Diesel USA
Type
Exhaust Manifold
Interchange Part Number
01 02 03 04 6.6 6.6L LB7 Duramax Diesel, Silverado Sierra GM GMC Chevy Chevrolet, 2500 3500 2500HD 3500HD, 2001 2002 2003 2004 Exhaust Turbo Charger Turbos, Performance Upgrade Increase Increased Air Flow, XDP XD342 Dorman 674-731 BD 1041460, 2008 2009 2010 LB7 LLY LBZ LMM LML 6.6L 6.6 High-Flow Race Series, 04.5 05 06 07 07.5 2004 2004.5 2005 2006 2007 08 09 10 2011 12 13, 14 15 16 2012 2013 2014 2015 2016
Manufacturer Warranty
1 Year
Features
Left & Right Exhaust
Universal Fitment
Yes
Country/Region of Manufacture
United States
Performance Part
Yes

Item description from the seller

About this seller

Doctor Diesel USA

98.2% positive feedback8.2K items sold

Joined Jun 2022
Usually responds within 24 hours

Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

Seller feedback (870)

All ratings
Positive
Neutral
Negative
  • a***h (21)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Fitment is perfect! High quality stuff. For the price point you can’t beat this kit, pretty much the same as PPE. Everything fit prefect. Installed this on my 2004.5 LLY duramax. Only thing that would make this kit better if it came with up pipe bolts. Definitely a noticeable difference in power and sound a lot more turbo noise!
  • b***. (18)- Feedback left by buyer.
    Past month
    Verified purchase
    Great quality iron manifolds are very nice. The welds on the up pipes look good. Clearance between the steering shaft. I ceramic coated mine.
  • 2***u (964)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Great product new as advertised packaging looked great great price
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