Passenger Side OEM Replacement Up-Pipe 2001-2004 Duramax 6.6L LB7 with Federal Emissions

The factory 2001–2004 LB7 Duramax passenger side up‑pipe is notorious for cracked bellows, exhaust leaks, and lost boost, especially on higher‑mileage and tuned trucks. This heavy‑duty replacement up‑pipe restores a tight seal between the exhaust manifold and turbo, improves exhaust flow, and is built to survive where the stock piece fails. Whether you’re chasing a persistent exhaust leak, cleaning up under‑hood temps, or refreshing the system during bigger upgrades, this is the up‑pipe your LB7 should have come with from the factory. 

• Direct replacement for 2001–2004 6.6L LB7 Duramax passenger side up‑pipe (manifold to turbo)

• High‑strength stainless bellows designed to handle heat and vibration without cracking or leaking

• Thicker‑wall tubing than OEM for long‑term durability on tuned and towing trucks 

• Improved exhaust flow for faster turbo spool‑up and lower EGTs compared to a tired or cracked factory pipe 

• Laser‑cut flanges for precise sealing to the factory exhaust manifold and turbo pedestal

• Designed to clear conventional downpipes and fit like OEM for straightforward installation

Fits:

• 2001–2004 Chevrolet Silverado 2500HD / 3500 with 6.6L LB7 Duramax

• 2001–2004 GMC Sierra 2500HD / 3500 with 6.6L LB7 Duramax

Specs:

• Location: Passenger side up‑pipe (exhaust manifold to turbo)

• Material: 201 Stainless Steel

• Wall thickness: .125mm / 18 Gauge 

• Tig welded in an ISO 9001:2015 and TS16949 certified facility

• Includes: up‑pipe and gaskets 

Replaces GM 97302261