U140E • U140F • U240E • U241E
Oversized Pressure Regulator & Boost Valve Kit 57917E-08K
-
Helps cure:
- Soft shifts
- Low line pressure
- Harsh shifts
- High line pressure
- Clutch & band failures
- High line pressure in Reverse
- Low converter pressure
1000/2000/2400
Trim Valve & Spring Kit 37000-12K
Fits ’00–’09 units only. The F-trim spring is applicable to ’00–’05 valve body casting only.
-
Helps cure:
- Premature clutch wear
- Inability to alter clutch apply pressure curve
4R100 • E4OD
Center Support Ring 36743-02
-
Helps cure:
- Excess wear of center support & case lugs at contact points
- Input drum wear at the center support
5R110W
TCC Control Plunger Valve Kit 36940-01K
5R110W
Oversized Manual Valve 36940-11
Replaces OE valves with or without holes in long spool.
-
Helps cure:
- Damaged valve body casting
- Low line pressure
- Delayed Drive
- Delayed Reverse
55-50SN • 55-51SN
Oversized Pressure Regulator & Boost Valve Kit 59947-12K
Also fits AF23/33 and RE5F22A.
-
Helps cure:
- Soft shifts
- Delayed shifts
- Delayed engagement
- TCC apply & release concerns
- Harsh shifts
1000/2000/2400
E-Shift Valve Spring 37000-02
Fits '00-'09 units only.
-
Helps cure:
- Code P0872
- Code P1711
- Pressure switch stuck on
- Failsafe mode
- 3rd Gear starts
4R44E • 4R55E • 5R44E • 5R55E
Pressure Regulator Sleeve Kit 37947-05K
-
Helps cure:
- Delayed engagement
- Poor shift quality
- Low line pressure
- High line pressure
- Overheating
- Low cooler flow at idle
4R44E • 4R55E • 5R44E • 5R55E
TCC Regulator Sleeve Kit 37947-09K
-
Helps cure:
- Code 628, 1741
- TCC apply concerns
- TCC cycling
- TCC surge
- High TCC slip RPM
- Overheated fluid
- Overheated converter
5L40-E • 5L50-E
Boost Valve Kit 55209-01K
5R55S • 5R55W
Reverse Engagement Valve Kit 56947J-29K
-
Helps cure:
- Delayed Reverse
- No Reverse
- Slipping gears
- Direct clutch burned
4R100 • E4OD
Oversized Solenoid Regulator Valve 36947-14
Fits '96-later, 2-spool valve
-
Helps cure:
- 2nd Gear starts
- 3rd Gear starts
- TCC cycling
- TCC slip
- Reduced lube oil from the center support














