How to replace the Coolant Level Sensor at the top of the radiator on Mazda RX-7?

To begin with, remove the bullet connector to the sensor on top of the radiator. After relieving all the pressure in the system, remove the radiator cap using a cloth wrapped around the cap as a safety measure. Using a wrench, take off the sensor that is located at the top of the radiator. When fitting the new sensor, tighten it to a torque of 13 to 21 in-lb (15 to 25 cm-kg), as increased torque may damage the radiator tops. Once the wiring connector has been connected to the sensor, install the radiator cap and start the engine. Let the engine run to its proper operating temperature and check for leaks around the sensor.

Genuine Mazda RX-7 Coolant Level Sensor

Radiator Tank Switch

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3 Coolant Level Sensors found

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Mazda RX-7 Level Sensor Part Number: N326-15-610
$38.91 MSRP: $51.90
You Save: $12.99 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Water Level
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 1986-1988 Mazda RX-7 | 10th Anniversary, Base, Base 2+2, Convertible, GTU, GXL, GXL 2+2, LX, LX 2+2, SE, SE 2+2, Sport, Turbo | 2 Cyl 1.3 L GAS
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Mazda RX-7 Fluid Level Sensor Part Number: N3A1-15-610A
$97.18 MSRP: $129.60
You Save: $32.42 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Water Level
- Replaces: N3A1-15-610A-PT, N3A1-15-610
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 1993-1995 Mazda RX-7 | Base, R1, R2, Touring | 2 Cyl 1.3 L GAS
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Mazda RX-7 Level Sensor Part Number: N337-15-610
$128.29 MSRP: $171.08
You Save: $42.79 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Water Level
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 1989-1991 Mazda RX-7 | Base, Convertible, GTU, GTUs, GXL, GXL 2+2, Turbo | 2 Cyl 1.3 L GAS

Mazda RX-7 Coolant Level Sensor

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Mazda RX-7 Coolant Level Sensor Parts and Q&A

Level Sensor
N326-15-610
Q:
How to replace the Coolant Level Sensor at the top of the radiator on Mazda RX-7?
A:
To begin with, remove the bullet connector to the sensor on top of the Radiator. After relieving all the pressure in the system, remove the radiator cap using a cloth wrapped around the cap as a safety measure. Using a wrench, take off the sensor that is located at the top of the radiator. When fitting the new sensor, tighten it to a torque of 13 to 21 in-lb (15 to 25 cm-kg), as increased torque may damage the radiator tops. Once the wiring connector has been connected to the sensor, install the radiator cap and start the engine. Let the engine run to its proper operating temperature and check for leaks around the sensor.