Genuine Toyota 90916-03078 Thermostat
$27.86
Price: $23.99 - $27.86
(as of Oct 02, 2025 17:24:54 UTC – Details)
Thermostat
AUTO_PART
Model Number: 90916-03078
Item_Weight 0.01 ounces
Machined
Customers say
Customers find this Toyota thermostat to be a genuine OEM part with accurate temperature control. The functionality receives mixed feedback, with some saying it works as expected while others report it failing after a few months of use. The rust resistance is also mixed, with several customers noting rust issues.
11 reviews for Genuine Toyota 90916-03078 Thermostat
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Steven C –
Great replacement
Direct replacement for my broken thermostat in my 1991 Toyota Pickup. Temp gauge was not working so replaced the thermostat and got it to work again. Great product but did not come with a gasket so had to order one
Jimmy –
The only thermostat that works correctly
I tried 3 different brand new aftermarket thermostats in my 1991 Toyota pickup and none of them would allow the water temperature to get up to initial operating temperature in a timely manner. The OEM thermostat (this one) builds heat in the motor quickly while still allowing the proper temperature after initial warm up. This came in a Toyota box with the correct markings on the thermostat itself. A little pricey compared to aftermarket but this one works where all the others did not. Very happy with this purchase.
Tim B. –
This is the thermostat
Had this toyota since 2014. It has run cold since then. Tried other thermos. Put this one in and the temp gauge went right to where it is supposed to be. Don’t forget to order the gasket with it.
Ramiro L. –
Original
Product was great and original
ken –
good quality
did not come with gasket other wise well made
Clemente Cruz –
Perfect Fit â¦OEM
Liked that it was an original Toyota partâ¦Disliked that it did not come with Gasket â¦Disassembled the thermostat area in my truck⦠and all of sudden had to run to automotive store to buy gasket⦠𥲠I recommend this part but make sure to buy gasket before disassembling truckâ¦ð
Kevin De leon –
Looks like old
Is it normal for it to be rusty and look old or used?
JM –
Good Thermostat
I installed this on my 1987 Toyota Pickup 22R. Iâve been running it for over a month now, and itâs been functioning great. I tested it before installing it and it functioned like it should.
Gilberto RÃos Glz. –
Tenia un termostato de 82 libras y este es de 88 que es el que debe de tener la Toyota 22 re 1994, sube un poco más la temperatura pero esa es la indicada para ese motor.
ARMANDO –
LLEGO EN TIEMPO ACORDADO
gustavo ramos sosa –
mi camioneta no tenia termostato y fallaba mucho, y no hay como la pieza original, le quedo perfecto, y trabaja a la perfección el motor, 22r..