Kevlar Allison 1000 C4 High Energy Pack

Premium Kevlar C4 high energy pack for the Allison 1000 series automatic transmission. The C4 clutch pack is critical for reliable shift engagement and must withstand the high torque output of the Duramax 6.6L diesel engine. These friction materials are engineered for consistent clutch apply, smooth shifts, and extended wear life under heavy-duty conditions.

Designed for 2001-2019 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD. Each plate is precision-manufactured to Allison specifications. Kevlar friction materials are the choice of professional Allison rebuilders nationwide for diesel truck applications.