SPRING, PG SERVO

The Coan Racing COA‑12851 Powerglide Servo Spring is a specialized spring designed for use within the servo assembly of GM Powerglide transmissions. Crafted to meet exact specifications, this spring provides precise servo piston actuation, ensuring consistent band release and engagement during gear shifts. Engineered for durability, it maintains its tension characteristics under high-temperature and high-cycle conditions typical of racing and heavy-use applications.

The COA‑12851 is a direct-fit replacement that contributes to reliable shift quality and long-term hydraulic performance.