GMC Sierra 3500 Transfer Case Brace - Wehrli - Brizzle Blue - `01-`07. Designed for 2001–2007 Duramax LB7/LLY/LBZ with the Allison transmission, it adds targeted reinforcement to curb driveline flex.

Developed and tested for high-horsepower use, this fabricated tubular-steel brace ties the Allison’s rear housing to the transfer case. By spreading load into the transmission center section, it helps deter tail-housing flex that can lead to cracks, leaks, and costly drivetrain damage. Installs with basic hand tools, uses existing OEM fasteners, and requires no transmission or transfer case removal. Finished in Brizzle Blue single-stage powder coat.

Features

• 2001–2007 Duramax LB7/LLY/LBZ, Allison-equipped
• Reduces driveline flex in off-road, pulling, and drag use
• Helps protect Allison tail housing from vibration-related damage
• Tubular-steel construction; uses OEM fasteners
• Brizzle Blue single-stage powder coat
• No drivetrain removal required

Have questions or planning a build? Call our Austin, TX shop at 512-982-9393 (TX) or our Los Angeles, CA area shop at 562-981-6800 (CA). We offer installation and customization at both locations.

Considering multiple items? Contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov