TH400 Racing Overhaul Kit

The TCI TH400 Racing Overhaul Kit is a comprehensive transmission rebuild solution engineered for high-performance applications demanding durability and precision. This racing overhaul kit contains all the critical gaskets, sealing rings, and seals required to restore a TH400 automatic transmission to factory specifications or prepare it for modified engine combinations where stock seals and gaskets would fail prematurely.

TH400 transmission rebuilds demand OEM-quality sealing components to prevent fluid leakage, maintain pressure integrity, and ensure reliable power transfer under sustained load and elevated RPM. This kit eliminates the guesswork of sourcing individual seals and gaskets by bundling factory-spec parts in one verified package. The TCI 228600 kit covers the complete seal and gasket set needed for a full overhaul, reducing the risk of missed components that can compromise a rebuild's longevity or leak-free operation.

Transmission builders, high-performance shops, and serious street and drag racing enthusiasts rely on complete overhaul kits to ensure repeatable results. Whether you're freshening a stock TH400, upgrading to handle increased torque output, or supporting a modified engine platform, having all seals and gaskets matched to the same rebuild ensures proper fit, correct fluid containment, and consistent performance across multiple seasons of use. This kit is essential for any TH400 rebuild where quality and reliability cannot be compromised.