4L80-E

Case Saver Retainer
Part No. 34762-20

Fits '99-later 4L80-E.

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Sonnax case saver retainer 34762-20 for '99-later GM 4L80-E units is the only intermediate clutch retaining ring case saver that allows the intermediate band to be retained. This case saver fits over the intermediate band anchor lug inside the case and extends rearward to support the intermediate clutch backing plate retaining ring, preventing case lug blow out. There have been a variety of case saver designs over the years, however, all require eliminating the intermediate band as is often done in drag racing trans-brake applications. Only the Sonnax case saver retainer supports the intermediate clutch retaining ring, yet is thin enough to allow the intermediate band to be installed, allowing case lug protection in all applications.

  • Protects case lugs from blow out
  • Salvages cases with one or two blown lugs
  • Use with or without intermediate band
  • See instructions for details on identifying '99-later 4L80-E applications.
  • Requires modification to intermediate clutch backing plate.
  • 4L80-E Case Saver Retainer 34762-20
  • 4L80-E Case Saver Retainer 34762-20 details