# Wehrli 2001-2007 Duramax LB7/LLY/LBZ Allison 4x4 Transfer Case Brace - WCFab Red

2001-2007 LB7/LLY/LBZ Duramax Allison Transfer Case Braces have been developed and tested for use on high horsepower Duramax applications, adding significant strength and reducing driveline flex common to extreme use such as off-roading, pulling, and drag racing. Helps eliminate the possibility of a cracked transmission tail housing on your Allison transmission from driveline vibrations due to things like a damaged u-joint or driveshaft by spreading the transfer case load across the transmission center section.

-   Reinforces the weaker tail housing section to eliminate flex caused by driveline vibrations which can result in a cracked housing, fluid leaks, and expensive transmission and transfer case damage.
-   Fabricated tubular steel support connects rear housing of Allison transmission to transfer case
-   Installs easily with basic hand tools. No removal of transmission or transfer case required.
-   Custom Single Stage Powder Coating
-   Uses existing OEM Fasteners

This Part Fits:

Year

Make

Model

Submodel

2001-2005

Chevrolet

Silverado 2500 HD

Base

2001-2006

Chevrolet

Silverado 2500 HD

LS

2001-2006

Chevrolet

Silverado 2500 HD

LT

2004-2006

Chevrolet

Silverado 2500 HD

WT

2007

Chevrolet

Silverado 2500 HD Classic

LS

2007

Chevrolet

Silverado 2500 HD Classic

LT

2007

Chevrolet

Silverado 2500 HD Classic

WT

2001-2005

Chevrolet

Silverado 3500

Base

2001-2006

Chevrolet

Silverado 3500

LS

2001-2006

Chevrolet

Silverado 3500

LT

2004,2006

Chevrolet

Silverado 3500

WT

2007

Chevrolet

Silverado 3500 Classic

LS

2007

Chevrolet

Silverado 3500 Classic

LT

2007

Chevrolet

Silverado 3500 Classic

WT

2002-2005

GMC

Sierra 2500 HD

Base

2001-2002,2006

GMC

Sierra 2500 HD

SL

2001-2006

GMC

Sierra 2500 HD

SLE

2001-2006

GMC

Sierra 2500 HD

SLT

2003-2006

GMC

Sierra 2500 HD

WT

2007

GMC

Sierra 2500 HD Classic

SL

2007

GMC

Sierra 2500 HD Classic

SLE

2007

GMC

Sierra 2500 HD Classic

SLT

2007

GMC

Sierra 2500 HD Classic

WT

2002-2005

GMC

Sierra 3500

Base

2001-2002,2006

GMC

Sierra 3500

SL

2001-2006

GMC

Sierra 3500

SLE

2001-2006

GMC

Sierra 3500

SLT

2004-2006

GMC

Sierra 3500

WT

2007

GMC

Sierra 3500 Classic

SL

2007

GMC

Sierra 3500 Classic

SLE

2007

GMC

Sierra 3500 Classic

SLT

2007

GMC

Sierra 3500 Classic

WT

## Details

- **Price:** 311.59 CAD
- **Vendor:** Wehrli
- **Type:** Brackets

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 311.59 CAD | In stock |

## Images

- Photo - Primary
- User 1
- User 1
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/wehrli-2001-2007-duramax-lb7-lly-lbz-allison-4x4-transfer-case-brace-wcfab-red)
> Updated: 2026-07-07