Transgo A500/518/618 Reprogramming Kit TFOD-HD2
With Gear Command
Fits all TF overdrives 88-03
Gas and diesel applications
This TFOD-HD2 Reprogramming Kit fits 1988 to 2003 Dodge, Ram and Jeep vehicles with both small case transmissions such as the A500, 40RH, 42RH, 40RE, 42RE, 44RE as well as big case transmission such as the A518, 46RH, 46RE, A618, 47RH and 47RE with gas or diesel engines. This kit does not fit the 48RE transmission or the 2003 Dodge trucks with the 8th VIN code of ‘C’. Common complaints on this transmission are TCC slip or shudder, 2nd gear band and direct clutch failure as well as torque converter drain-back.
*The gear command feature is NOT advised for diesel engines. Also, the PSI output applies to big case units only and will vary depending on oil pump volume output.
- TCC slip or shudderReduces converter drain-backSoft shifts2nd band failure3rd clutch failureIncreases clutch element torque capacityProvides short clean shifts as well as an improved TCC engagement feelOptional gear command
- (3) High-temp low shrink sealing ringsCase orifice plugLower 1-2 accumulator springRear servo springs, spacer and snap ringFront servo springDrop-in USA-made hardened steel 1-2 governor valve (for optional gear command)Throttle valve spring (for optional later up-shifts)Part throttle body transfer plate, pin and two detent limit valve springsMumbly peg (for easy detent spring and ball installation)USA-made hardened steel manual valve with converter charge in park provision and cherry bomb(3) 3-4 accumulator springs and plug for accumulator housingTransfer plate, tapered plug, spring, check ball and limit bushing(2) 3-4 quick fill valve springsMain valve body separator plateSolenoid body plateBoost valve bracketPR valve shim, spring seat and inner spring for line-to-converter feed provision as well as outer spring for increased pressure(3) Drill bits(2) Pan Gaskets