6L80 (258mm), 8L90

Piston Seal
Part No. GM-O-22

Sonnax piston seal GM-O-22 is a direct replacement for worn or damaged seals in GM 6L80 (258mm) and 8L90 converters.

This seal requires sizing back into the groove before assembly. A common 2” PVC straight coupling can be used as a sizing tool. A lead in chamfer may need to be widened for best use.

  • Material: PTFE
  • Seal Style: Solid
  • Width: 0.098"
  • Height: 0.128"
  • Outer Dia.: 2.393"

Where to Buy

  • Existing Customers: Contact your sales representative.
  • New Customers: Fill out the form and a sales representative will contact you.
  • 6L80 (258mm), 8L90 Piston Seal GM-O-22