TH400 Transmission Parts

Complete catalog of TH400 transmission parts for 1964-1990 GM heavy-duty applications and high-horsepower performance builds.

We carry rebuild kits, master kits, shift solenoids, EPC and TCC solenoids, valve bodies, torque converters, hard parts including sun shells and planetary assemblies, gaskets, seals, filters, sensors, and shift correction kits — everything you need to overhaul a TH400 from start to finish.

All parts are OEM or quality aftermarket, sourced through authorized distributors. Wholesale pricing available for transmission shops; fast shipping nationwide.

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