FTI Performance Powerglide Automatic Transmission Brake Solenoid features a solid and reliable screw together design for the ultimate drag racer. They make an excellent choice for bracket racers, weekend warriors, and high-powered race cars. The transmission brake solenoid features a dual internal lip seal, and updated coil design for improved reliability while the screw together design gives the end user easy access to service the transbrake solenoid when needed.