This direct replacement drum brake wheel cylinder was specifically engineered to match the fit, function and performance of the original wheel cylinder on particular vehicles. It is manufactured and tested for quality assurance. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Buick Skyhawk: 1985, 1986, 1987, 1988, 1989] - [Buick Skylark: 1987, 1988, 1989, 1990] - [Buick Somerset: 1987] - [Cadillac Cimarron: 1985, 1986, 1987, 1988] - [Chevrolet Beretta: 1991] - [Chevrolet Cavalier: 1985, 1986, 1987, 1988, 1989, 1990, 1991] - [Chevrolet Corsica: 1987, 1988, 1989, 1990, 1991] - [Oldsmobile Calais: 1987] - [Oldsmobile Cutlass Calais: 1988, 1989, 1990] - [Oldsmobile Firenza: 1985, 1986, 1987, 1988] - [Pontiac Grand Am: 1987, 1988, 1989, 1990] - [Pontiac J2000 Sunbird: 1985] - [Pontiac Sunbird: 1986, 1987, 1988, 1989, 1990, 1991]