Ford E4OD/4R100 1989-2004 Gas and Diesel Trucks Includes Coast clutch Heavy Duty Snap ring, OverDrive housing Spiral Lock Snap ring, High Temp Direct Clutch seal, Pressure Regulator Boost valve assembly, 1-2 Shift valve spring, No Stick 1-2 Accumulator valve and other calibration items to improve overall drivabilty and durability. Addresses Soft shifts; converter burnup; reverse delay; converter slide/shudder; no reverse hot; 2nd and 3rd burnup; pump buzz. Installation recommendation: Experienced technician Transmission removal necessary: Yes/Preferred Note: " Valve body components may be installed without removing transmission"