Exhaust Up-Pipe for 2001+ LB7 LLY LBZ LMM LML L5P 6.6L Duramax Sierra/Silverado 2500 3500

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Product Information +

Exhaust Up-Pipe for 2001–2023 6.6L Duramax (LB7–L5P)

Upgrade your Duramax with SPETUNER’s high-performance exhaust up-pipe, engineered to improve turbo efficiency, reduce exhaust backpressure, and withstand extreme temperatures. Whether you drive an LB7, LLY, LBZ, LMM, LML, or L5P, this up-pipe is a direct-fit, bolt-on replacement that delivers real performance gains.

Quick Highlights

  • Fitment: 2001–2023 Chevy/GMC 2500 & 3500 HD with 6.6L Duramax (LB7 to L5P)

  • Performance Boost: Improves turbo spool and reduces EGTs

  • Durability: Made from T304 stainless steel with flex bellows

  • Installation: OEM-style flanges, gaskets included – no tuning required

  • Use Case: Ideal for tuned trucks, deletes, towing, and off-road builds

Vehicle Compatibility (Duramax Generations)

  • LB7 Up Pipe (2001–2004): Direct fit upgrade for early Duramax models

  • LLY Up Pipe (2004.5–2005): Replaces restrictive factory units

  • LBZ Up Pipe (2006–2007): Supports heavy towing and high-HP builds

  • LMM Up Pipe (2007.5–2010): Designed for durability under heat

  • LML Up Pipe (2011–2016): Improves flow and longevity vs OEM

  • L5P Up Pipe (2017–2023): Heavy-duty replacement for emission-heavy setups

Why Choose SPETUNER Up-Pipe?

Feature SPETUNER Up-Pipe OEM Pipe
Material T304 Stainless Mild Steel
Flex Bellows Yes No
Turbo Spool Faster Response Slower
Leak Resistance TIG Welded Prone to Crack
Fitment Compatibility LB7–L5P Model-specific