Replacement Gasket for 221500 Trans Brake

The replacement gasket for 221500 Trans Brake is a critical internal component engineered for TCI Turbo 400 transbrake systems used in drag racing, bracket racing, and high-performance street applications. This composite valve body gasket maintains proper seal integrity between the transbrake actuator and transmission valve body, preventing fluid leakage and ensuring consistent transbrake engagement. For racers and transmission specialists who demand reliability under repeated launch cycles, this OEM-equivalent gasket eliminates guesswork during rebuild or maintenance procedures.

Constructed from composite material, this gasket is specifically engineered to handle the thermal cycling and hydraulic pressures inherent to transbrake operation. The gasket sits between the valve body and actuator assembly, creating a hermetic seal that resists fuel and transmission fluid degradation over extended use. Its precision-cut geometry matches OEM specifications exactly, ensuring zero-clearance fitment without overtightening stress that could compromise surrounding aluminum or cast-iron surfaces in the transmission housing.

This replacement gasket is essential for anyone rebuilding or servicing a TCI 221500 transbrake system on a TH400 transmission. Installation requires removal of the valve body, careful cleaning of sealing surfaces, and proper torque sequencing to specifications—standard procedure for transmission technicians. At 0.06 lbs and compact 9 x 0.15 x 9 in dimensions, it stores easily in any shop inventory. Whether you're refreshing a worn transbrake after multiple seasons or performing preventative maintenance on a fresh install, this composite gasket ensures your launch system performs consistently at the starting line.