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Brand: Sonnax

Other Part Number: A76932BK

Type: Case Repair Kit

Interchange Part Number: S76932K

Items Included: 2-3 Accumulator Piston Kit

Manufacturer Part Number: 76890-21K

Material: Aluminum,Steel

Universal Fitment: Yes

Vintage Part: No

Performance Part: Yes

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

2-3 Accumulator Piston Kit
Part No. 76890-21K

Forward or direct clutch oil pressure loss can often be traced to wear and scoring of the 2-3 accumulator bores. Previously, the only lasting correction was to replace the case. Sonnax 2-3 accumulator piston kit 76890-21K restores Forward line pressure and salvages damaged cases by repairing damaged 2-3 accumulator bores on AOD, AODE, 4R70E, 4R70W, 4R75E, 4R70W and 4R75W units. Press-in sleeves and a matched piston restore pressures and install easily, without machining or special tools.

  • Salvage transmission cases with damaged accumulator bore
  • Kit installs easily, with no special tools required
  • Eliminates concerns about bonded piston seal delamination
  • Lower Sleeve Small
  • Upper Sleeve Large
  • D-Ring Seal Small
  • D-Ring Seal Large

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