Low Servo Ring

LOW SERVO RING

The Coan Racing COA‑12311 Low Servo Ring is a precision-engineered sealing component designed specifically for GM Powerglide transmissions. Machined to exact factory dimensions using durable materials, this ring ensures a leak-free seal, maintaining proper hydraulic pressure during gear shifts. Its accurate fit resists extrusion and wear, even under repeated cycling and thermal stress.

Ideal for both performance builds and routine rebuilds, the COA‑12311 restores original hydraulic integrity and enhances shift reliability, helping to preserve clean, consistent transmission performance.