Symptoms:

  • Burnt bands
  • No Reverse
  • No 4th

Cause:

Wear of the 3-4 shift valve end plug can allow apply pressure for the Low Reverse and Overdrive bands to exhaust, resulting in no Reverse or no 4th Gear.

Correction:

Sonnax drop-in O-ringed end plug provides positive sealing in worn bores or for worn OE end plugs, preventing valuable apply pressure from exhausting.

4R70E, 4R70W, 4R75E, 4R75W, AODE

O-Ringed 3-4 Shift Valve End Plug Kit
Part No. 76948-49K

Fits '01-later units.

You need this if... View Instructions Find a Distributor

Vehicles with Ford AODE, 4R70W, 4R70E, 4R75W or 4R75E transmissions can have complaints of no Reverse and/or no 4th Gear. These can be the result of low pressure in the respective apply circuits failing to apply the bands, and/or burning the bands over time. Installing Sonnax O-ringed 3-4 shift valve end plug kit 76948-49K can eliminate this leakage by providing a positive seal at the casting bore. The drop-in Zip Valve™ installs quickly and easily.

  • End Plug (5)
  • O-Ring (7) 2 extra
  • 4R70E, 4R70W, 4R75E, 4R75W, AODE O-Ringed 3-4 Shift Valve End Plug Kit 76948-49K
  • 4R70E, 4R70W, 4R75E, 4R75W, AODE O-Ringed 3-4 Shift Valve End Plug Kit 76948-49K

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

4R70E, 4R70W, 4R75E, 4R75W, AODE O-Ringed 3-4 Shift Valve End Plug Kit Vacuum Test Locations