New Fel Pro rear differential housing cover gasket. This is for 10-bolt differentials. Fits the following:
82-02 Camaro w/ 10-Bolt differential
82-02 Firebird/Trans Am w/ 10-Bolt 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.