How to service and repair the thermostat on Toyota Corolla?

The repair and servicing process starts with engine under cover RH removal then draining engine coolant subsequently unfastening the generator V belt and generator assembly followed by the thermostat removal. The first step involves removing the water inlet by unfastening its 2 nuts then it becomes ready for thermostat detachment. You should inspect the thermostat valve opening temperature which is marked on the device by submerging it in water while gradually heating it until the temperature falls within 80 to 84 degrees Celsius (176 to 183 degrees Fahrenheit). Replace the thermostat whenever its valves do not open to a suitable temperature range between 80 to 84 degrees Celsius (176 to 183 degrees Fahrenheit). A proper replacement of the thermostat should be considered if the valve lift reveals less than 10 mm (0.39 inch) during the 95 degrees Celsius (203 degrees Fahrenheit) inspection. Use replacement thermostats whenever the valve remains open at temperatures below 77 degrees Celsius (171 degrees Fahrenheit). The installation procedure starts with applying a new gasket on top of the thermostat before installation where you should position the jiggle valve vertically upwards while keeping in mind it can be placed between 10 degrees angles on either side of its correct orientation. After placing the generator assembly the water inlet should be installed with 2 nuts which need to be torqued to 11 Nm (112 kgf-cm, 8 ft. lbs.). Place engine coolant into the system while searching for coolant leaks before installing the right-hand engine under cover.

OEM Toyota Corolla Thermostat

Engine Coolant Thermostat

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10 Thermostats found

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Toyota Corolla Thermostat
Part Number: 90916-03090
$27.59 MSRP: $38.41
You Save: $10.82 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Engine Coolant Thermostat; Thermostat, Coolant
- Manufacturer Note: *WAX 82-95
- Replaces: 90916-03060
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1988-1991 Toyota Corolla | Base, DLX, DLX All Trac, FX, FX16, FX16 GTS, GTS, LE, SR5, SR5 All Trac | 4 Cyl 1.6 L GAS
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Toyota Corolla Water Inlet
Part Number: 90916-A3003
$22.69 MSRP: $31.59
You Save: $8.90 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat; Engine Coolant Thermostat; Thermostat, Coolant
- Replaces: 90916-03129, 90916-03084
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2000-2009 Toyota Corolla | Base, CE, LE, S, VE, XLE, XRS | 4 Cyl 1.8 L GAS
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Toyota Corolla Thermostat
Part Number: 90916-A3002
$24.25 MSRP: $33.74
You Save: $9.49 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Engine Coolant Thermostat; Thermostat, Coolant
- Replaces: 90916-A3001, 90916-03140, 90916-03133
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2009-2013 Toyota Corolla | Base, L, LE, S, XLE | 4 Cyl 1.8 L GAS
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Toyota Corolla Thermostat
Part Number: 90916-03145
$22.69 MSRP: $31.59
You Save: $8.90 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Engine Coolant Thermostat; Thermostat, Coolant
- Manufacturer Note: *WAX 82-95,TYPE C:REFER ILLUST.
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2009-2019 Toyota Corolla | 50th Anniversary Special Edition, Base, L, LE, LE Eco, Le Eco Plus, S, SE, Special Edition, XLE, XSE | 4 Cyl 1.8 L GAS
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Toyota Corolla Thermostat
Part Number: 90916-03144
$22.69 MSRP: $31.59
You Save: $8.90 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Engine Coolant Thermostat; Thermostat, Coolant
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2009-2019 Toyota Corolla | 50th Anniversary Special Edition, Base, L, LE, LE Eco, Le Eco Plus, S, SE, Special Edition, XLE, XSE | 4 Cyl 1.8 L GAS
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Toyota Corolla Thermostat
Part Number: 90916-03136
$26.28 MSRP: $36.57
You Save: $10.29 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Engine Coolant Thermostat
- Replaces: 90916-C3001
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2009-2010 Toyota Corolla | XRS | 4 Cyl 2.4 L GAS
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Toyota Corolla Thermostat
Part Number: 90916-03107
$27.35 MSRP: $38.07
You Save: $10.72 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Engine Coolant Thermostat
- Manufacturer Note: *WAX 76-90
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1998-1999 Toyota Corolla | CE, LE, VE | 4 Cyl 1.8 L GAS
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Toyota Corolla Thermostat
Part Number: 90916-03046
$25.08 MSRP: $34.91
You Save: $9.83 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Engine Coolant Thermostat; Thermostat, Coolant
- Replaces: 90916-03069
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1984-1997 Toyota Corolla | Base, CE, DLX, DLX All Trac, DX, FX, FX16, FX16 GTS, GTS, LE, LE Limited, Sport DLX, Sport GTS, Sport SR5, SR5, SR5 All Trac | 4 Cyl 1.6 L GAS, 4 Cyl 1.8 L DIESEL, 4 Cyl 1.8 L GAS
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Toyota Corolla Thermostat
Part Number: 90916-A3004
$26.04 MSRP: $36.25
You Save: $10.21 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Engine Coolant Thermostat
- Replaces: 90916-03149, 90916-03148
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2014-2022 Toyota Corolla | 50th Anniversary Special Edition, L, LE, LE Eco, Le Eco Plus, S, SE, Special Edition, XLE, XSE | 4 Cyl 1.8 L GAS
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Toyota Corolla Sensor
Part Number: 88620-01010
$184.34 MSRP: $263.19
You Save: $78.85 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat Assembly
- Replaces: 88620-12030
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1988-1992 Toyota Corolla | Base, DLX, DLX All Trac, LE, SR5 All Trac | 4 Cyl 1.6 L GAS

Toyota Corolla Thermostat

If you're thinking about purchasing OEM parts for your Toyota Corolla, our website is your one-stop destination. We stock an extensive selection of genuine Toyota Corolla Thermostat at pocket-friendly prices. Plus, we guarantee a swift delivery and a hassle-free return policy for your convenience.

Toyota Corolla Thermostat Parts Questions & Experts Answers

Water Inlet
90916-A3003
Q: How to service and repair the thermostat on Toyota Corolla?
A: The repair and servicing process starts with engine under cover RH removal then draining engine coolant subsequently unfastening the generator V belt and generator assembly followed by the thermostat removal. The first step involves removing the water inlet by unfastening its 2 nuts then it becomes ready for thermostat detachment. You should inspect the thermostat valve opening temperature which is marked on the device by submerging it in water while gradually heating it until the temperature falls within 80 to 84 degrees Celsius (176 to 183 degrees Fahrenheit). Replace the thermostat whenever its valves do not open to a suitable temperature range between 80 to 84 degrees Celsius (176 to 183 degrees Fahrenheit). A proper replacement of the thermostat should be considered if the valve lift reveals less than 10 mm (0.39 inch) during the 95 degrees Celsius (203 degrees Fahrenheit) inspection. Use replacement thermostats whenever the valve remains open at temperatures below 77 degrees Celsius (171 degrees Fahrenheit). The installation procedure starts with applying a new gasket on top of the thermostat before installation where you should position the jiggle valve vertically upwards while keeping in mind it can be placed between 10 degrees angles on either side of its correct orientation. After placing the generator assembly the water inlet should be installed with 2 nuts which need to be torqued to 11 Nm (112 kgf-cm, 8 ft. lbs.). Place engine coolant into the system while searching for coolant leaks before installing the right-hand engine under cover.