New Fel Pro rear differential housing cover gasket. This is for 9-bolt Borg Warner differentials. Fits the following:
87-91 Camaro w/ 9-Bolt Borg Warner differential
87-91 Firebird/Trans Am w/ 9-Bolt Borg Warner differential
NOTE : To figure out what differential you have on your vehicle, simply count the bolts that hold the cover to the differential. You must check, as some cars have 9, some have 10, and the gaskets are different.