Converter pressure regulator kit A604,41T

Converter pressure regulator kit A604,41T Switch Valve Bias Valve Not for use with #33 plates & bodies. Can be used with all later designs. Symptoms: Converter shudder & failure Cooler restriction Planetary failure TCC deflection & lining failure TCC lockup surge Cause: Insufficient control of apply and release oil circuits results in high converter apply pressure and deflection of the lockup piston. Correction: The redesigned Sonnax switch valve improves TCC solenoid control over the apply rate, reducing EMCC cycling