How do you replace a thermostat in a cooling system on Kia Sedona?

You need to drain the cooling system. Follow the radiator hose to the thermostat housing and disconnect it. The same area where both hoses of the radiator are attached is where you should find a thermostat at the end of lower hose in its housing . Get ready for some coolant coming out after breaking through gasket seal . Having noted how installation took place, remove the thermostat from its housing and clean all sealing sides thoroughly. Fit a new gasket onto it evenly all round. The edge of a thermostat is on which this seal should be put around. With highest point being at jiggle pin, insert thermostat and housing respectively into their places tightening cover fasteners as per torque until all other parts are back in their positions backwards. Add coolant again to cooling system. Start the engine, check for leaks and observe that everything works well as expected.

Genuine Kia Sedona Thermostat

Engine Coolant Thermostat

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9 Thermostats found

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Kia Sedona Thermostat Assembly
Part Number: 255003C150
$18.84 MSRP: $26.50
You Save: $7.66 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Thermostat
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2015-2018 Kia Sedona | 3.3L - Lambda 2 | Wagon Long - 7P, Wagon Long - 8P
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Kia Sedona Thermostat Assembly
Part Number: 2550037200
$18.94 MSRP: $26.63
You Save: $7.69 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2001-2005 Kia Sedona | Low Grade, Middle Grade | 3.5L | Wagon Short 7
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Kia Sedona Control Assembly-COOLANT
Part Number: 256003CAE0
$192.75 MSRP: $275.75
You Save: $83.00 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Control Assembly-Coolant Temperature; Control Assembly, Thermostat Unit
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2015-2018 Kia Sedona | 3.3L - Lambda 2 | Wagon Long - 7P, Wagon Long - 8P
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Kia Sedona Thermostat Assembly
Part Number: 255003C130
$18.94 MSRP: $26.63
You Save: $7.69 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2006-2014 Kia Sedona | 3.5L - Lambda 2 | Wagon Long - 7P
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Kia Sedona Thermostat Assembly
Part Number: 255003C100
$21.33 MSRP: $30.00
You Save: $8.67 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2006-2014 Kia Sedona | High Grade, Middle Grade | 3.8L, 3.8L - Lambda | Wagon Long - 7P, Wagon Long 7, Wagon Short - 7P, Wagon Short 7
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Kia Sedona Thermostat Assembly
Part Number: 255003L300
$109.15 MSRP: $154.82
You Save: $45.67 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat, Thermostat Housing, Thermostat Unit
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2019-2021 Kia Sedona | 3.3L - Lambda 2 | Wagon Long - 7P, Wagon Long - 8P
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Kia Sedona Control Assembly-COOLANT
Part Number: 256003L300
$316.61 MSRP: $455.69
You Save: $139.08 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Assembly
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2019-2021 Kia Sedona | 3.3L - Lambda 2 | Wagon Long - 7P, Wagon Long - 8P
View related parts
Kia Sedona Control Assembly-COOLANT
Part Number: 256003C100
$286.40 MSRP: $402.82
You Save: $116.42 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Control Assembly-Coolant Temperature
- Replaced by: 256003C101
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2006-2014 Kia Sedona | 3.5L - Lambda 2, 3.8L - Lambda | Wagon Long - 7P, Wagon Short - 7P
View related parts
Kia Sedona Control Assembly-COOLANT
Part Number: 256003C101
Product Specifications
- Other Name: Control Assembly-Coolant Temperature
- Replaces: 256003C100
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2006-2014 Kia Sedona | 3.5L - Lambda 2, 3.8L - Lambda | Wagon Long - 7P, Wagon Short - 7P

Kia Sedona Thermostat

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Kia Sedona Thermostat Parts Questions & Experts Answers

Thermostat Assembly
2550037200
Q: How do you replace a thermostat in a cooling system on Kia Sedona?
A: You need to drain the cooling system. Follow the radiator hose to the thermostat housing and disconnect it. The same area where both hoses of the radiator are attached is where you should find a thermostat at the end of lower hose in its housing . Get ready for some coolant coming out after breaking through gasket seal . Having noted how installation took place, remove the thermostat from its housing and clean all sealing sides thoroughly. Fit a new gasket onto it evenly all round. The edge of a thermostat is on which this seal should be put around. With highest point being at jiggle pin, insert thermostat and housing respectively into their places tightening cover fasteners as per torque until all other parts are back in their positions backwards. Add coolant again to cooling system. Start the engine, check for leaks and observe that everything works well as expected.