This brake proportioning valve is designed to match the fit and function of the original valve 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 LeSabre: 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999] - [Buick Park Avenue: 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999] - [Buick Riviera: 1997, 1998, 1999] - [Cadillac DeVille: 1991, 1992, 1993, 1997, 1998, 1999] - [Cadillac Eldorado: 1997, 1998, 1999, 2000, 2001, 2002] - [Cadillac Fleetwood: 1991, 1992, 1993] - [Cadillac Seville: 1997, 1998, 1999] - [Oldsmobile 88: 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999] - [Oldsmobile 98: 1991, 1992, 1993, 1994, 1995, 1996] - [Oldsmobile Aurora: 1997, 1998, 1999] - [Oldsmobile Delta 88: 1991] - [Pontiac Bonneville: 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999]