Shim Kit GM 8.875in 12 Bolt Car

The Allstar Performance Shim Kit for GM 8.875-inch 12-bolt differentials is an essential component for serious gearheads performing rear-end assembly, teardown, or differential case work on classic and modern GM muscle cars and street rods. This kit is designed to maintain precise bearing preload and backlash specifications, which are critical for the performance and longevity of the differential assembly.

Engineered specifically for the GM 8.875-inch 12-bolt carrier, this shim kit includes precision-ground shim stock in multiple thicknesses. This allows technicians to dial in exact bearing preload during reassembly, controlling ring-gear-to-pinion backlash and establishing the correct bearing load without over-tightening. Proper shimming is crucial to prevent excess friction and heat, ensuring a smooth and efficient operation.

This kit is indispensable for any mechanic rebuilding or servicing a GM 8.875-inch 12-bolt differential, whether refreshing a stock unit or installing fresh bearings. It is compatible with various GM vehicles, including the Chevrolet Camaro and Pontiac Firebird, making it a versatile choice for automotive enthusiasts.