How to replace Coolant Temperature Sensors on 2007 Mazda 6?

Take the negative battery cable off and empty the engine coolant. Take off battery and tray, unplug ECT sensor connector, remove sensor, unscrewing. Check the O-ring, change it in case it is damaged. Install Reverse of the steps of removal, and make sure that it is locked properly, and replace the cooling system. Compatibility with the four cylinder models.

Genuine 2007 Mazda 6 Coolant Temperature Sensors

Coolant Temperature Sensor

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2007 Mazda 6 Sensor Part Number: AJ57-18-840A
$40.16 MSRP: $53.56
You Save: $13.40 (26%)
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Product Specifications
- Other Name: Switch, Water Thermostat 3.0L; Coolant Temperature Sensor, Sensor
- Replaces: AJ57-18-840
- Item Weight: 0.60 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: AJ57-18-840A
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
More Info
Fits the following 2007 Mazda 6 Submodels:
- i, Mazdaspeed, S | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS

2007 Mazda 6 Coolant Temperature Sensors Parts and Q&A

Q: How to replace Coolant Temperature Sensors on 2007 Mazda 6?
A: Take the negative battery cable off and empty the engine coolant. Take off battery and tray, unplug ECT sensor connector, remove sensor, unscrewing. Check the O-ring, change it in case it is damaged. Install Reverse of the steps of removal, and make sure that it is locked properly, and replace the cooling system. Compatibility with the four cylinder models.