# Wehrli 01-04 Chevrolet 6.6L Duramax LB7 2in Stainless Passenger Side Up Pipe w/Gaskets (Twin Turbo)

Replace the lightweight, leak-prone passenger side OEM up pipe with this heavy-duty 11 gauge 2" Stainless up pipe. HD Stainless Bellows that will not crack and leak like OEM. Increase Turbo spool-up and decrease EGTs. This up pipe is built with more sweeping, less aggressive bends for use in COMPOUND / TWIN TURBO STYLE APPLICATIONS ONLY. It WILL NOT clear a conventional downpipe behind the engine off of the turbocharger in the valley. - - Compatible with only factory exhaust manifolds or WCFab Duramax Billet Exhaust Manifolds (WCF100363). - - NOTE: This up pipe will ONLY fit with OEM exhaust manifold.

-   Full flow design eliminates clearance dent and tight bends required for engine valley mount single turbo down pipes
-   Heavy Duty 2" Passenger Side Up Pipe Passenger Side Up Pipe for Compound / Twin Turbo Applications
-   WILL NOT CLEAR a Conventional Single Turbo down pipe!
-   Fully TIG Welded 11 GA Stainless Steel Construction
-   Up Pipe Gaskets (2)
-   Made in USA

This Part Fits:

Year

Make

Model

Submodel

2001-2004

Chevrolet

Silverado 2500 HD

Base

2001-2004

Chevrolet

Silverado 2500 HD

LS

2001-2004

Chevrolet

Silverado 2500 HD

LT

2004

Chevrolet

Silverado 2500 HD

WT

2001-2004

Chevrolet

Silverado 3500

Base

2001-2004

Chevrolet

Silverado 3500

LS

2001-2004

Chevrolet

Silverado 3500

LT

2004

Chevrolet

Silverado 3500

WT

2002-2004

GMC

Sierra 2500 HD

Base

2001-2002

GMC

Sierra 2500 HD

SL

2001-2004

GMC

Sierra 2500 HD

SLE

2001-2004

GMC

Sierra 2500 HD

SLT

2003-2004

GMC

Sierra 2500 HD

WT

2002-2004

GMC

Sierra 3500

Base

2001-2002

GMC

Sierra 3500

SL

2001-2004

GMC

Sierra 3500

SLE

2001-2004

GMC

Sierra 3500

SLT

2004

GMC

Sierra 3500

WT

## Details

- **Price:** 497.8 CAD
- **Vendor:** Wehrli
- **Type:** Connecting Pipes

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 497.80 CAD | In stock |

## Images

- Photo - Primary
- Photo - Primary
- Photo - Mounted
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/wehrli-01-04-chevrolet-6-6l-duramax-lb7-2in-stainless-passenger-side-up-pipe-w-gaskets-twin-turbo)
> Updated: 2026-07-03