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 underheated 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 Toyota Vehicles:
1996-2002 4Runner 3.4L V6
1988-1993 Camry 2.2L L4 / 2.5L 3.0L V6
1990-1993 Celica
2000-2005 Echo
1989, 1991-1995 MR2
1993-1998 Supra
1995-1998 T100 3.4L V6
1995-2004 Tacoma 3.4L V6
2000-2004 Tundra 3.4L V6
Compatible with Lexus Vehicles:
1990-1991 ES250 2.5L V6
1992-1993 ES300 3.0L V6
Replaces Part #: 90916-03075, 9091603075, 16325-62010, 1632562010 thermostat with gasket.
NOTE: To ensure accurate fitment, please confirm your vehicle information in the above compatibility section and the description.