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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4T80-E AFL Valve Kit 72854-01K

4T80-E

AFL Valve Kit 72854-01K

    Helps cure:
  • Solenoid performance codes
  • 2nd Gear starts
  • Soft shifts & poor line rise
  • Harsh shifts
  • No 4th
  • Clutch failure
  • Band failure
  • Wrong gear starts
AOD Boost Valve Kit 76990-03K

AOD

Boost Valve Kit 76990-03K

Factory style sleeve, no O-rings

    Helps cure:
  • Soft slide shifts
  • Delayed Reverse
  • Low line rise
  • Direct clutch failure
200-4R, 4L60, 4L60-E Accumulator Valve Train Kit 77777L-K

200-4R • 4L60 • 4L60-E

Accumulator Valve Train Kit 77777L-K

Fits "L" version valve trains in light/medium weight vehicles, .330" dia. Fits 4L60 '87-later auxiliary valve body styles only.

    Helps cure:
  • 1-2 Bang at light throttle
  • Reduced 2-4 band life
AOD Throttle Valve Plug Kit 76989K

AOD

Throttle Valve Plug Kit 76989K

O-Ring Style

    Helps cure:
  • Uncontrollable shift timing
  • Low line rise
  • Overheated clutch
  • Overheated band
  • TV pressure imbalance
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