GM 8.5 Carrier Shims

The Richmond GM 8.5 Carrier Shims (Part No. 38-0006-1) are precision differential shims engineered for GM 8.5-inch rear axles, with proven compatibility across multiple GM and Ford differential platforms including 7.5-inch and 8.2-inch housings. These shims are critical components in differential assembly and adjustment, allowing technicians to fine-tune carrier preload, backlash, and bearing clearance to OEM specifications.

Proper differential shim selection and installation directly affects gear mesh contact pattern, noise levels, and load distribution across ring and pinion teeth. Undersized or worn shims result in improper preload, which accelerates bearing wear and can lead to catastrophic differential failure under load. Richmond shims are manufactured to exacting tolerances, ensuring repeatable, reliable differential geometry when paired with precision measurement and assembly technique. Available individually or as part of complete differential service kits, these shims accommodate both stock and upgraded differential applications.

This product is designed for automotive technicians, restoration specialists, and off-road enthusiasts rebuilding GM 8.5-inch differentials. Whether performing routine maintenance, addressing noise complaints, or assembling a custom rear axle for high-performance or lifted truck applications, accurate shim selection is non-negotiable. The compact design (3.35 x 2.3 x 3.7 inches) fits standard differential carrier bores, and the 0.54 lb weight is typical for this component class.