Allmotorparts Engine Thermostat Replace 21210AA080 Compatible with Subaru - 2009-2010 Forester 2006-2011 Impreza 2005-2014 Legacy 2005-2014 Outbac

An engine's thermostat regulates the temperature of the engine by controlling coolant flow, its job is to block the flow of coolant to the radiator until the engine has warmed up. Symptoms of a bad or failing thermostat: high temperature reading and engine overheating; low temperature reading and under heated engine; temperature changing erratically; coolant leaks around thermostat housing or under vehicle. NOTE: If the thermostat has a jiggle pin, check valve, or other feature to assist in bleeding air from the system in a vertical installation, the jiggle pin should be located at the north or 12 o'clock location. Compatible with Subaru Vehicles: 2006, 2007 B9 Tribeca 2009, 2010 Forester 2006, 2007, 2008, 2009, 2010, 2011 Impreza 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 Legacy 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 Outback 2008, 2009, 2010, 2011, 2012, 2013, 2014 Tribeca Replaces Part #: 21210AA080 thermostat with gasket. NOTE: This is NOT a genuine part, it's a aftermarket replacement part manufactured by Allmotorparts. NOTE: To ensure accurate fitment, please confirm your vehicle information in the above compatibility section and the description.