Goerend Allison 1000 C5 Kolene Steels

High-performance Kolene treated C5 steel plates for the Allison 1000 transmission in Duramax diesel trucks. Engineered by Goerend with heat-treated steels to handle increased power from performance tunes, turbo upgrades, and heavy towing applications. The Allison 1000 is a strong platform that responds well to quality performance upgrades.

Designed for 2001-2019 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD. Goerend is a trusted name in Duramax and Allison performance, providing proven components used by diesel performance enthusiasts and commercial operators nationwide.