Pressure Regulator Spring - "Red" 150-180 PSI

The Coan Racing COA‑12051 Pressure Regulator Spring is a high-performance, red-coded replacement spring designed for GM Powerglide transmissions, calibrated to increase line pressure to between 150 and 180 psi. Compact yet engineered for precision, this spring installs directly into the existing pressure regulator without modifications, offering enhanced hydraulic control that helps prevent early clutch slippage and improve shift firmness under load.

This durable spring delivers a cost-effective upgrade for both routine rebuilds and performance builds, allowing tuners to fine-tune operating pressure with minimal effort. Manufactured in the USA by Coan Racing, a trusted name since 1976, the COA‑12051 spring ensures reliable, consistent pressure performance in street, strip, or race applications.