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. Vehicle model years this part fits (be sure to check your vehicle trim using the Amazon garage) - [Lexus ES300: 1999, 2000, 2001, 2002, 2003] - [Lexus ES330: 2004, 2005, 2006] - [Lexus RX300: 1999, 2000, 2001, 2002, 2003] - [Lexus RX330: 2004, 2005, 2006] - [Lexus RX400h: 2006, 2007, 2008] - [Toyota Avalon: 2000, 2001, 2002, 2003, 2004] - [Toyota Camry: 2004, 2005, 2006] - [Toyota Highlander: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010] - [Toyota Sienna: 2001, 2002, 2003] - [Toyota Solara: 2004, 2005, 2006, 2007, 2008]