This replacement engine coolant thermostat housing assembly is engineered to match the fit and durability of the stock housing assembly on specified vehicles. It is designed to withstand extreme temperature changes to extend service life. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Cadillac Catera: 1997, 1998, 1999, 2000, 2001] - [Cadillac CTS: 2003, 2004] - [Chevrolet Vectra: 2003, 2004, 2005] - [Saab 900: 1994, 1995, 1996, 1997] - [Saab 9000: 1995, 1996, 1997] - [Saab 9-5: 1999, 2000, 2001, 2002, 2003] - [Saturn L300: 2001, 2002, 2003, 2004, 2005] - [Saturn LS2: 2000] - [Saturn LW2: 2000] - [Saturn LW300: 2001, 2002, 2003] - [Saturn Vue: 2002, 2003].