The TransGo A1-LU-BST Lock-up Boost Valve is engineered for your high horsepower 2001-2003 GM 2500HD/3500HD With Allison 5-Speed Transmission. This boost valve is designed to prevent torque converter slippage under heavy duty/race conditions by significantly increasing lock-up oil pressure. This increase in pressure also prevents the PCM from throwing the P0741 code and throwing your transmission in limp mode.
Features:
- For High HP/Race Applications
- Reduces Torque Converter Slip
- Significantly Increases Lock-up Oil Pressure
Note: Recommended for high horsepower and race applications only.
