2001-2007 LB7/LLY/LBZ Duramax Allison 4x4 Transfer Case Brace

Protect the Allison tail housing

On LB7/LLY/LBZ Duramax 4x4 trucks the Allison's rear housing is a weak point. This fabricated tubular steel brace ties it to the transfer case and spreads the transfer case load onto the transmission center section.

Wehrli developed and tested it on high-horsepower trucks used hard, such as off-roading, pulling and drag racing. It cuts the flex from driveline vibration, such as a bad U-joint or driveshaft, that can crack the housing and lead to fluid leaks and costly transmission or transfer case damage.

It uses the factory fasteners and installs with basic hand tools, without removing the transmission or transfer case.

Who it's for

LB7/LLY/LBZ Duramax 4x4 owners making more power or working the truck hard.

Key specs (per Wehrli)

What's included

• Transfer case brace

Fitment notes

• Fits 2001-2007 Chevrolet Silverado / GMC Sierra 2500 HD and 3500 with the 6.6L LB7, LLY or LBZ Duramax.
• For 4x4 trucks with the Allison transmission.

Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.