Allison 1000 Rebuild Kit

Xcalliber supplies a comprehensive selection of Allison 1000 rebuild kits engineered for both 5-speed and 6-speed applications in GM Duramax trucks. Each Allison rebuild kit contains quality-verified components, including clutches, seals, gaskets, O-rings, bushings, bearings, and filter kits. It’s everything needed for a reliable, complete overhaul. These are stock-specification kits designed to restore your transmission to factory performance levels, making them the right choice for daily drivers, fleet vehicles, and work trucks that need dependable service without added complexity.

As a manufacturer with roots going back to 1984, Xcalliber brings deep Allison-specific knowledge to every kit we supply. Our Allison 1000 transmission rebuild kits are competitively priced and backed by the quality standards you’d expect from a US-based manufacturer. Shop with confidence knowing our parts are designed to deliver long-lasting, dependable performance mile after mile.