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Your cart is empty. 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:
2003-2007 4Runner
1998-2007 Land Cruiser
2001-2007 Sequoia
2000-2006 Tundra
Compatible with Lexus Vehicles:
1998-2000 GS400
2001-2007 GS430
2003-2006 GX470
1997-2000 LS400
2001-2006 LS430
1998-2007 LX470
1998-2000 SC400
2002-2007 SC430
Replaces Part #: 90916-03100, 9091603100, 16346-50010 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.
Customer
Reviewed in the United States on March 23, 2025
Works great
John arsenault
Reviewed in Canada on August 6, 2024
Did not fit my truck as it said it did
Elmer
Reviewed in the United States on May 3, 2024
It was the best value for the money to get this part quickly delivered to my door for install. Timing was everything. Amazon helped make everything easy with a better price than I could pay for anywhere. My car is now running cool and great since the install.
Jason8540
Reviewed in Canada on February 10, 2024
Excellent product, removed the old one replaced with this one, no more over heating
Shelby McDonald
Reviewed in the United States on November 1, 2024
Works like it should and came with gasket as it should.
R B
Reviewed in the United States on January 15, 2024
I started getting a service code about the coolant not reaching operating temperature in the expected time frame.Once I removed the old thermostat, I found that it was stuck open even while cold, once I installed this one, the car came up to temp in the expected time.
joel l.
Reviewed in the United States on April 11, 2024
Excelente producto
Daryl Does Reviews
Reviewed in the United States on November 26, 2022
Just did a timing and water pump job on my 275k miles old Sequoia and neglected to do the thermostat. A few days after doing the job the check engine light came on for a coolant temp sensor and likely was the thermostat. Popped open the housing and the seal on the old one was somehow mangled and blocked the coolant from flowing. Looked like a car crash.I bought this and it arrived in a few days and got it changed out in 30 minutes. It appeared to be well engineered to a higher standard and even has the air valve on it and again, comes with a gasket! Just make sure you put that air valve on the top so the air can flow there it so it can bleed the air properly. (This is something most people don't know and is the proper way of installing it)Time will tell the quality of the product but if i can get 80k miles or 10 years (when i gotta do the timing belt job again) out of it I'll be fine.
Customer
Reviewed in the United States on October 10, 2022
I was worried buying auto parts online but I am very happy it works it was the right part Amazon will b my new auto part store
Gene L
Reviewed in the United States on February 25, 2021
I replaced the thermostat when I replaced the timing belt. The heater works so good you have to turn on the air conditioner on to cool off after 20 minutes. Yeah, that good!
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