Transmission Parts

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

Find a Distributor

Looking for Part Instructions?

View Sonnax Part Instructions

Enter a Sonnax part number below to view its instructions. For general reaming instructions, click here.

6F35 (Gen. 1) • 6F35 (Gen. 2) • 6F35 (Gen. 3)

O-Ringed End Plug Kit 144740-03K

Helps cure:

Shift concerns
Burnt clutches
Pressure loss
TCC apply concerns

6F35 (Gen. 1) • 6F35 (Gen. 2) • 6F35 (Gen. 3)

Control Pressure Regulator Valve Kit 144740-04K

Helps cure:

Bump shifts
Flare shifts
Harsh shifts
Erratic shifts
Burnt clutches
Overheated fluid

6T30 (Gen. 1) • 6T40 (Gen. 1) • 6T45 (Gen. 1) • 6T50 (Gen. 1)

O-Ringed End Plug Kit 144740-02K

Helps cure:

Pressure loss
Burnt clutches
Shift concerns
TCC apply concerns

6F50 • 6F55 • 6T70 (Gen. 1) • 6T75 (Gen. 1)

Oversized Pressure Regulator Valve Kit 124740-12K

Helps cure:

Erratic line pressure
Poor shift quality
Burnt clutches
Low converter & lube flow
Overheating
TCC apply & release concerns

6T30 (Gen. 1) • 6T30 (Gen. 2) • 6T31 (Gen. 3 6T40) • 6T35 (Gen. 3 6T40) • 6T40 (Gen. 1) • 6T40 (Gen. 2) • 6T41 (Gen. 3 6T40) • 6T45 (Gen. 1) • 6T45 (Gen. 2) • 6T46 (Gen. 3 6T40) • 6T50 (Gen. 1) • 6T50 (Gen. 2) • 6T51 (Gen. 3 6T40)

Oversized TCC Regulator Valve Kit 144740-16K

Helps cure:

Code P0741, P0742
No lockup
TCC slip
Loss of fuel economy
Low TCC apply pressure
Overheated fluid & TCC lining
Harsh TCC apply

6F35 (Gen. 1) • 6F35 (Gen. 2) • 6F35 (Gen. 3)

Oversized TCC Regulator Valve Kit 144740-19K

Helps cure:

Code P0741
Code 742
No lockup
TCC slip
Harsh TCC apply
Loss of fuel economy
Low TCC apply pressure
Overheated fluid & TCC lining

A6GF1 • A6LF1/2/3 • A6MF1/2

TCC Pressure Control Plunger Valve Kit 102741-01K

Helps cure:

TCC codes
Converter shudder & failure
TCC slip
Low TCC apply pressure
Low TCC release pressure
Overheated fluid & TCC lining

U760E • U760F

Oversized Lockup Control Valve Kit 47740-31K

Helps cure:

TCC slip codes
TCC apply & release concerns
RPM fluctuation
Harsh downshifts

U660E • U660F

Oversized Lockup Control Valve Kit 47740-30K

Helps cure:

TCC slip codes
TCC apply & release concerns
RPM fluctuation
Harsh downshifts

55-50SN • 55-51SN

Zip Kit® AW55-50SN-ZIP

Also fits AF 23/33 and RE5F22A units.

Helps cure:

Burnt clutches
Delayed engagement
Inadequate lubrication
Low pressure
Slips & flares
Soft shifts
TCC apply & release concerns
TCC codes

U760E • U760F

Oversized Solenoid Modulator Valve Kit 47740-25K

Helps cure:

Shift concerns
Solenoid performance codes
TCC apply & release concerns

U660E • U660F

Oversized Solenoid Modulator Valve Kit 47740-24K

Helps cure:

Shift concerns
Solenoid performance codes
TCC apply & release concerns

U660E • U660F • U760E • U760F

Oversized Primary Pressure Regulator & Reverse Boost Valve Kit 47740-02K

Kit can be used to replace either OE ratio.

Helps cure:

Erratic shifts
Soft shifts
Low line pressure
Low line rise
Clutch slippage
High line pressure in Reverse
Burnt clutches
High line pressure
Harsh shifts
Low converter pressure

U660E • U660F • U760E • U760F

Oversized Clutch Control Valve Kit 47740-22K

Helps cure:

4-5 Harsh
4-5 Flare
Delayed Neutral to Drive
Delayed Reverse

U660E • U660F • U760E • U760F

Oversized Secondary Pressure Regulator Valve Kit 47740-26K

Helps cure:

TCC codes
TCC apply & release concerns
TCC shudder
Lube failures
Bearing failure
Bushing failure

↑