Manual Valve Body Kit w/ Engine Braking (STD Pattern) PRN321

MANUAL VALVE BODY KIT W/ENGINE BRAKING (STD PATTERN) PRN321

The Coan Racing COA‑22012 Manual Valve Body Kit with Engine Braking (Standard Pattern PRN321) is a carefully crafted hydraulic control package designed for Turbo-Hydramatic 400 transmissions, tailored to the standard shift pattern (PRN321). This kit transforms your transmission with full manual gear control while adding an engine braking feature that enhances downshift stability and reduces vehicle roll during deceleration. It includes a precision-machined manual selector valve, a heavy-duty separator plate with gaskets, and an elevated accumulator spring to maintain firm line pressure under aggressive driving.

Engine braking is built into the valve body's hydraulic circuitry, providing resistance when downshifting to help slow the vehicle, ideal for performance driving or towing scenarios. Engineered for durable performance, the COA‑22012 mounts directly into the stock valve body bolt pattern and delivers consistent, reliable fluid control and shift feel in high-RPM, high-load conditions.