EXTENSION HOUSING GASKET

The Coan Racing COA‑22158 Extension Housing Gasket is a precision-molded seal specially crafted for Turbo-Hydramatic 400 transmissions. Manufactured in the USA to Coan's exacting standards, this gasket provides a durable, leak-free seal between the transmission case and the extension housing. Its accurate fit and material integrity ensure consistent hydraulic pressure and maintain fluid containment under high-temperature and high-load conditions.

Ideal for rebuilds, performance upgrades, or standard maintenance, the COA‑22158 ensures reliable operation and transmission longevity through a simple, direct replacement installation.