WEHRLI CUSTOM FAB WCF100140 2011-2019 LML L5P DURAMAX ALLISON 4X4 TRANSFER CASE BRACE

Product Description

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The WEHRLI CUSTOM FAB WCF100140 2011-2019 LML L5P DURAMAX ALLISON 4X4 TRANSFER CASE BRACE is designed to reinforce one of the most stressed components in high-powered Duramax trucks — the transfer case. Under heavy towing, aggressive driving, or increased horsepower levels, the factory transfer case mounting points can experience significant flex and stress. The Wehrli brace helps stabilize the drivetrain by supporting the rear of the transfer case and distributing load more evenly across the transmission and crossmember.

This heavy-duty reinforcement brace is precision built from thick steel and engineered specifically for GM Duramax trucks equipped with the Allison transmission and 4x4 drivetrain. By reducing case flex and supporting the transfer case housing, the WCF100140 helps prevent cracking, drivetrain misalignment, and premature component wear in trucks that tow heavy loads or produce elevated power levels.

Designed as a straightforward bolt-on upgrade, the brace installs using factory mounting points and hardware locations. Whether your Duramax is a daily driver, work truck, or high-horsepower build, the Wehrli transfer case brace adds critical drivetrain stability and peace of mind.

Key Benefits:

• Reinforces the Duramax transfer case mounting area
• Helps reduce drivetrain flex under heavy load
• Supports transfer case housing during high torque applications
• Improves drivetrain stability during towing and performance driving
• Precision fabricated heavy-duty steel construction
• Designed for Allison transmission equipped 4x4 trucks
• Simple bolt-on installation using factory mounting points
• Made in the USA

Fitment:

• 2011 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LML 4WD
• 2012 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LML 4WD
• 2013 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LML 4WD
• 2014 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LML 4WD
• 2015 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LML 4WD
• 2016 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax LML 4WD
• 2017 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax L5P 4WD
• 2018 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax L5P 4WD
• 2019 Chevrolet Silverado 2500HD / 3500HD 6.6L Duramax L5P 4WD
• 2011 GMC Sierra 2500HD / 3500HD 6.6L Duramax LML 4WD
• 2012 GMC Sierra 2500HD / 3500HD 6.6L Duramax LML 4WD
• 2013 GMC Sierra 2500HD / 3500HD 6.6L Duramax LML 4WD
• 2014 GMC Sierra 2500HD / 3500HD 6.6L Duramax LML 4WD
• 2015 GMC Sierra 2500HD / 3500HD 6.6L Duramax LML 4WD
• 2016 GMC Sierra 2500HD / 3500HD 6.6L Duramax LML 4WD
• 2017 GMC Sierra 2500HD / 3500HD 6.6L Duramax L5P 4WD
• 2018 GMC Sierra 2500HD / 3500HD 6.6L Duramax L5P 4WD
• 2019 GMC Sierra 2500HD / 3500HD 6.6L Duramax L5P 4WD

FAQ

Why is a transfer case brace important for Duramax trucks?

Duramax trucks producing high torque or used for heavy towing can place significant stress on the transfer case housing and mounting points. A transfer case brace helps distribute load and reduce flex, helping protect the case from cracking or drivetrain misalignment.

Will this brace fit trucks with the Allison transmission?

Yes. The WCF100140 is specifically designed for Duramax trucks equipped with the Allison transmission and 4WD drivetrain between 2011 and 2019.

Does installation require drilling or modifications?

No. The Wehrli brace is designed as a bolt-on upgrade that uses factory mounting points for straightforward installation.

Is this recommended for stock trucks?

Yes. Even stock trucks that tow heavy loads can benefit from additional drivetrain support. The brace is especially valuable for trucks running larger tires, performance tuning, or increased torque.