Valair Allison 1000 External Filter Kit

High-performance auxiliary external filter system for the Allison 1000 transmission in Duramax diesel trucks. Engineered by Valair with spin-on filtration upgrade 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. Valair is a trusted name in Duramax and Allison performance, providing proven components used by diesel performance enthusiasts and commercial operators nationwide.