This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing 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. [Lexus GS300: 2006] - [Lexus GS400: 1998, 1999, 2000] - [Lexus GS430: 2001, 2002, 2003, 2004, 2005, 2006, 2007] - [Lexus GX470: 2003, 2004, 2005, 2006, 2007, 2008, 2009] - [Lexus LS400: 1998, 1999, 2000] - [Lexus LS430: 2001, 2002, 2003, 2004, 2005, 2006] - [Lexus LX470: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007] - [Lexus SC400: 2000] - [Lexus SC430: 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010] - [Toyota 4Runner: 2003, 2004, 2005, 2006, 2007, 2008, 2009] - [Toyota Land Cruiser: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007] - [Toyota Sequoia: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012] - [Toyota Tundra: 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009]