Complete OE-Spec Rebuild for GM 8.5/8.6 Differentials

The SKF SDK321-K differential kit delivers all primary wear components required to restore GM 8.5/8.6-inch axles in 2007–2008 model year applications. Premium bearings with precisely matched cones and cups ensure proper preload and alignment, while seals featuring SKF’s patented Bore-Tite coating enhance housing retention and leak resistance. Where applicable, the kit includes form-fitting gaskets and silicone sealant to streamline assembly and improve sealing integrity. All components meet or exceed original equipment specifications for dependable service in light-duty truck and SUV duty cycles.

Coverage and Fit

Designed for GM 8.5/8.6-inch differentials used across Chevrolet, GMC, Buick, Cadillac, Isuzu, and Saab, the SDK321-K targets 2007–2008 vehicles equipped with these axles. This application-focused coverage helps simplify sourcing and reduces the risk of mismatch on common GM platforms. Dimensional details provided support accurate planning and fit verification, and the kit aligns with OEM service practices for efficient setup and correct bearing preload.

Included Components and Service Advantages

The SDK321-K packages the essentials for a complete rebuild: pinion inner and outer bearings, differential carrier bearings, pinion seal, pinion nut, and—where required—form-fitting gaskets and silicone sealant. By supplying matched bearing sets and Bore-Tite sealed components in one box, the kit minimizes parts chasing, shortens bay time, and reduces the likelihood of costly comeback repairs. Backed by SKF manufacturing standards, the kit provides consistent quality and performance you can specify with confidence for repeatable results.