Fairly certain you want this:

TIMKEN 8792S {Click Info Button for Alternate/OEM Part Numbers} Info
Automatic trans.; 5 speed trans.; Trans. code 5L40-E

More Information for TIMKEN 8792S

EDIT: Timken seal will fit, but is shallow, the better options are: GM/AC Delco 8644709 or Transmax 84072A

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