12-Bolt Rear End Package

The Moser Engineering 12-Bolt Built to Order Rear End Package is a custom-fabricated rear assembly featuring a US-made housing with OEM-located mounting points. Each unit is constructed with seamless 3-inch O.D., 1/4-inch wall steel tubing, custom alloy axles, and high-performance components, including Timken bearings, a pinion yoke, and a differential. These packages are configured to your specific vehicle requirements and arrive partially assembled for installation.

The system utilizes Moser-owned casting boxes and is designed as a direct-fit replacement for various GM, Chevy, and GMC car and truck applications. Customers can select from numerous options for gear ratios, axle splines, and finishes. Please note that these are strictly "car" type rear ends; aftermarket suspension components that attach to the rear cover of OEM 12-bolt truck rears are not applicable.