Extension Housing Seal

EXTENSION HOUSING SEAL (PG, TH350, C4, 700R4)

The Coan Racing COA‑12172 Extension Housing Seal is a finely crafted sealing component designed specifically for Powerglide, TH350, C4 and 700R4 transmissions. Precisely molded to OEM dimensions, this seal fits the transmission’s extension housing interface and prevents fluid leakage. Constructed from durable materials capable of withstanding exposure to fluid and temperature variations, it maintains hydraulic integrity and supports consistent performance under high-stress conditions.

Whether you're performing routine maintenance or rebuilding your transmission for enhanced durability and performance, the COA‑12172 seal offers a dependable, direct-fit solution to keep your transmission running smoothly and leak-free.