Billet Aluminum Direct Piston .730" - 6/8 Clutch w/ OEM Drum

The Coan Racing COA‑12826B Billet Aluminum Direct Clutch Piston (.730″) is a precision-crafted hydraulic component engineered for GM Powerglide transmissions using OEM clutch drums accommodating 6/8 clutch plates. Machined from billet aluminum, this piston delivers a lightweight yet robust solution for restoring ideal hydraulic pressure in the direct clutch pack. With a .730″ thickness designed to optimize clearance and fluid dynamics, the COA‑12826B ensures consistent engagement and shift quality under demanding conditions.

Ideal for both street rebuilds and performance-driven applications, this piston offers reliable fitment and smooth operation in standard Powerglide setups.