Allmotorparts Engine Thermostat Replaces 90916-03075 9091603075 Compatible with Toyota - 1996-2002 4Runner 1995-2004 Tacoma 2000-2004 Tundra 1995

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 V6 3.4L 1988-1993 Camry L4 2.2L, V6 2.5L 3.0L 1990-1993 Celica 1989, 1991-1995 MR2 1995-1998 T100 V6 3.4L 1995-2004 Tacoma V6 3.4L 2000-2004 Tundra V6 3.4L Replaces Part #: 90916-03075, 9091603075 Thermostat. NOTE: To ensure accurate fitment, please confirm your vehicle information in the above compatibility section and the description.