The torque converter seal or front seal on Fastlane is this:

W0133-1634133

This thing looks sort of like a wheel bearing seal and seals the neck of the TC where it slides over the input shaft of the tranny.

The pump seal is:

W0133-1642641

As you said , it's huge O-ring. The front pump fits into the front casting and this keeps it from leaking.

You MIGHT also need a W0133-1635036, front cover (paper) gasket. I honestly can't remember...I did a 722.3xx and part of a 722.1xx and my memory is fuzzy...


I hope you have a transmission manual- there is a 722.3xx factory manual floating around somewhere and an exploded parts diagram

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