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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MT-600

Rear Sun Gear S6883901

C6

Extra Wide Band S026968

Fits '66-later

4R100 • E4OD

Forward Clutch Piston 36434A

Helps cure:

Burnt Forward clutch

4R100 • E4OD

Tool Kit F-36424-TL16C

4F27E • FN4A-EL • FNR5 • FS5A-EL

Tool Kit F-46892-TL

4R44E • 4R55E • 5R44E • 5R55E

Tool Kit 37947-TL11

AX4S • AXODE

Bypass TCC Control Plunger Valve Kit 96206-01K

Helps cure:

Code 628
TCC slip
No lockup
Soft TCC apply
No TCC release during coast
Excess cooler circuit oil loss

4L80-E • 4L85-E

Pinion Roller 34880-02

Output & reaction planetaries, 1999 & Later

Helps cure:

Lost or damaged component

55-50SN • 55-51SN

Tool Kit F-59947-TL26

CD4E • LA4A-EL

Oversized Bypass Clutch Control Valve Kit 73840-BK

Helps cure:

Code 628, 1744, 1740
Reduced converter clutch life
Planetary failure
Bushing failure
Loss of lube oil

4R44E • 4R55E • 5R44E • 5R55E

TCC Modulator Sleeve Kit 37947-07K

Helps cure:

Code 1741
No lockup
Engine stall on FWD engagement
Poor converter fill & delayed engagements
Low cooler flow

4R44E • 4R55E • 5R44E • 5R55E

Boost Valve Kit 37947-01K

OE Ratio

Helps cure:

Delayed Reverse
Soft shifts
Low line pressure
Poor modulator control

4R44E • 4R55E • 5R44E • 5R55E

TCC Regulator Valve Spring Kit 37947-46K

Matches 4.0L calibration

Helps cure:

Code P0741
Low TCC apply pressure
Low spring rate on 2.3L TCC regulator valve
Damaged valve body casting

ZF6HP21 • ZF6HP28 • ZF6HP34

Zip Kit® ZF6-GEN2-ZIP

Helps cure:

Broken parts due to excessive line pressure
Excess heat
Firm shifts
Flare shifts & bind-ups
Delayed engagement
Harsh engagement

4L60-E • 4L65-E

Boost Valve Kit 77898E-3K

Early style, .490" dia., increased ratio, factory style

Helps cure:

3-4 Clutch failure
2-4 Band failure
Low line rise
Poor shift quality

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