Mevotech MS43904 Torsion Bar Key - Front

Front Torsion Bar Key for GM Trucks and SUVs

Restore front suspension adjustment with this Mevotech torsion bar key, part number MS43904. Built from steel with a corrosion-resistant finish, it is made for front suspension service on a wide range of Chevrolet, GMC, and Cadillac applications.

Compatible with 1988-2007 Chevrolet K1500, Silverado 1500, Tahoe, Suburban 1500, Avalanche 1500, and Silverado 1500 Classic; 1988-2007 GMC K1500, Sierra 1500, Yukon, Yukon XL 1500, and Sierra 1500 Classic; and 1992-2006 Cadillac Escalade, Escalade ESV, and Escalade EXT.

Key Features

• Steel construction for suspension durability
• Corrosion-resistant finish for long-term service
• Front-position torsion bar key for GM suspension systems
• Mounting hardware included
• Direct replacement style for common GM truck and SUV applications
• Cross-reference: MOOG Chassis Products K100011

Detailed Description

Mevotech MS43904 is a front torsion bar key engineered for GM light-duty trucks and SUVs that use torsion bar front suspension. The steel body and corrosion-resistant finish support dependable service in demanding undercar environments, while the included mounting hardware helps streamline the repair process. This part cross-references Monroe Shocks & Struts IK100011 for the same application.

Use MS43904 when servicing front suspension height adjustment or replacing a worn torsion bar key on vehicles such as the Chevrolet Silverado 1500, GMC Sierra 1500, and Chevrolet Tahoe. It also covers classic 2007 Silverado 1500 Classic and Sierra 1500 Classic models, along with Cadillac Escalade front suspension applications.

What It Helps Fix

• Uneven front ride height
• Worn or damaged torsion bar key splines
• Difficulty maintaining suspension adjustment
• Front-end sag on GM torsion bar-equipped trucks and SUVs
• Noise or looseness related to suspension wear

Installation Notes and Tips

Install MS43904 on the front suspension only and verify vehicle-specific torsion bar indexing before assembly. Inspect related suspension components, including torsion bars, adjuster bolts, and mounting points, during service. Follow factory service procedures for safe unloading and reloading of torsion bar tension.

Quality Assurance

Mevotech MS43904 is built as a steel replacement torsion bar key with a corrosion-resistant finish for service in front suspension applications. Part number MS43904 is listed for direct-fit use across multiple Chevrolet, GMC, and Cadillac models.