Aisin TF-80/81SC (Ford AF-21) Transaxles
Excessive bore wear in Aisin's TF-80SC can lead to misalignment of the servo piston, as the piston relies on the servo pin to remain true in it's bore.
The AF21 kit contains tooling necessary to repair the B1 servo pin bore. We save your case by reaming out the case and installing a brass bushing that has proven to wear considerably better than the stock aluminum case. The AF21 is a BLUE series kit, and is available as either a Master (pictured) or a Sub kit.