This window regulator guide is designed to match the fit and function of the original hardware on specified vehicles, and is engineered for durability and reliable performance. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Buick Electra: 1985, 1986, 1987, 1988, 1989, 1990] - [Buick LeSabre: 1986, 1987, 1988, 1989, 1990, 1991] - [Buick Park Avenue: 1991, 1992, 1993] - [Buick Skylark: 1986, 1987, 1988, 1989, 1990, 1991] - [Buick Somerset Regal: 1985] - [Buick Somerset: 1986, 1987] - [Cadillac DeVille: 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993] - [Cadillac Fleetwood: 1986, 1987, 1988, 1989, 1990, 1991, 1992] - [Oldsmobile 98: 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993] - [Oldsmobile Calais: 1985, 1986, 1987] - [Oldsmobile Cutlass Calais: 1988, 1989, 1990, 1991] - [Oldsmobile Delta 88: 1986, 1987, 1988, 1989, 1990, 1991] - [Pontiac Bonneville: 1987, 1988, 1989, 1990, 1991] - [Pontiac Grand Am: 1985, 1986, 1987, 1988, 1989, 1990, 1991]