Complete Install Kit GM 8.5 / 8.6

The Ratech 376K is a complete differential installation kit designed for GM 10-bolt rear ends with 8.5 or 8.625-inch ring gears. This kit includes essential components such as bearings, crush sleeve, gaskets, hardware, seals, shims, and marking compound.

Ratech distinguishes its shims by manufacturing them in-house from hardened American-made shim stock, ensuring they won't split under performance loads and provide a broader, more precise thickness range compared to sheet metal gauges. This approach helps achieve accurate specifications, even with non-OEM gear sets that may have wider tolerances.