Tranny Yoke Plug TH-400 Jerico

The Wehrs Machine Tranny Yoke Plug TH-400 Jerico is a specialized component designed for high-performance drag racing and heavy-duty transmission builds. This plug addresses a critical sealing point on TH-400 and Jerico transmissions, preventing fluid leakage at the yoke interface where driveshaft torque loads are greatest. Proper yoke sealing is essential for maintaining fluid integrity under extreme acceleration and sustained load conditions.

Constructed to withstand the demands of competitive motorsports, this yoke plug is precision machined from steel, ensuring a reliable fit inside the transmission's yoke bore. By eliminating leakage paths at the yoke, this plug helps maintain consistent transmission fluid levels and pressure during hard launches and high-RPM operation, which is critical for protecting internal clutch packs and band assemblies.

This plug is essential for rebuilders and performance enthusiasts upgrading TH-400 transmissions or using dedicated Jerico racing units in drag cars, bracket racers, and circle-track platforms. Installation requires basic transmission knowledge, as the yoke must be removed or the plug accessed during the assembly or rebuild process.