Transmission Parts

Browse all Sonnax transmission parts here, or use the filters below to find just what you are looking for.

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4L60 • 4L60-E

Heavy Duty Input Shaft 77733-10SB

For ’85-later units with 298mm converter, 30-spline input shaft. For ’82–’84 units with 27-spline input shaft, converter and stator shaft will need to be updated to ’85-later design.

4L60-E • 4L65-E • 4L70-E

Smart-Tech® Input Housing Kit with Heavy Duty Input Shaft 77733-11KB

For units with 300mm converter, non-reluctor style shaft.

4L60 • 4L60-E

Smart-Tech® Input Housing Kit with Heavy Duty Input Shaft 77733-10KB

For ’85-later units with 298mm converter, 30-spline input shaft. For ’82–’84 units with 27-spline input shaft, converter and stator shaft will need to be updated to ’85-later design.

RE5R05A

Line Pressure/TCC/Front Brake Solenoid 63421

Also fits Hyundai/Kia A5SR1/2

Helps cure:

Line pressure instability
TCC apply & release concerns

6L80 • 6L90

The Sure Cure® Kit SC-6L80-6L90

Helps cure:

Burnt clutches
High TCC slip RPM
Shift concerns
Low cooler flow
Harsh shifts
Clutch slippage
Overheated transmission
Code P0218
Code P0741, P0742

4R44E • 4R55E • 5R44E • 5R55E

EPC Limit Plug Kit 37947-55K

Helps cure:

High line pressure in Reverse
Reverse band failure
Harsh shifts

01M • 01N • 01P

TCC Regulator Valve Spring 119940-19

Helps cure:

High TCC apply pressure
TCC slip codes
Converter hub & stator damage
Brass contamination in oil pan

10L60 (Gen. 1) • 10L80 (Gen. 1) • 10L90 (Gen. 1) • 10R60 • 10R80

O-Ringed End Plug Kit 105740-13K

Helps cure:

Low line pressure
Various shift concerns
TCC apply & release concerns
Overheated fluid
TCC slip codes
Delayed engagement
Burnt clutches

AS69RC

Remanufactured Valve Body AS69RC01

Fits '13–'18

AS69RC

Remanufactured Valve Body AS69RC19

Fits '19-later

9T45 • 9T50 • 9T60 • 9T65

Zip Kit® 9T45-ZIP

Helps cure:

Loss of shift solenoid control pressure
Erratic line pressure
Pressure loss
Poor shift quality
Various shift concerns
Burnt clutches
Low converter & lube flow
Park release issues
Overheating

6R140

Bypass Blocker Valve Kit 126740-26K

Fits '11–'16 and '17-later gas units only. Eliminates the need for the OE thermal element and can be used with or without Sonnax converter limit valve kit 126740-25K.

Helps cure: