Coolant Temperature Sensor - CI - XEMS66
Best current price£8.99from My Motor World
Best offers
Shopping.co.uk recommended and popular offers
My Motor World£8.99Visit shop Ci Ignition Xems66 Coolant Temperature Sensor
Visit shopMy Motor World£8.99Visit shop All Offers
3 offers from £8.99 - £11.20
View price history by clicking the chart icon.
My Motor WorldCi Ignition Xems66 Coolant Temperature Sensor
Free delivery in 1–3 days
£8.99
Visit shop
Ci Ignition Xems66 Coolant Temperature SensorFree delivery in 1–3 days£8.99Visit shop →
eBayCoolant Temperature Sensor XEMS66 CI Sender Transmitter 60811520 55199579 New
Free delivery in 1–3 days
£11.20
Visit shop
Product Information
Full details
The CI XEMS66 Coolant Temperature Sensor is an essential replacement component for automotive technicians and DIY mechanics looking to restore precise engine thermal monitoring. Designed to deliver reliable data to the engine management unit, this sensor ensures optimal fuel-to-air ratios and prevents overheating; however, users must verify engine compatibility and thread sizing before installation, as incorrect fitting may cause cooling system leaks.
All features
| Model Part Number | XEMS66 |
|---|---|
| Brand | CI |
Extended Product Information
FAQs
What is the thread size for this sensor?
The CI XEMS66 features an M12 x 1.5 thread size.
How long is the sensor body?
The sensor body measures exactly 37 mm in length.
Does this sensor come with a wiring harness?
No, this is the sensor component only, designed to connect to your vehicle's existing 2-pin oval wiring harness.
Will I lose a lot of coolant during installation?
You will lose a small amount of coolant. It is recommended to have a catch pan ready and to top off your reservoir after installation.
How do I know if this is compatible with my car?
Check your vehicle's service manual or parts compatibility guide to see if the engine requires an M12 x 1.5 sensor with a 2-pin oval connector.
Troubleshooting
Engine temperature gauge reads zero or erratic
Check the 2-pin connector for signs of corrosion or a loose electrical connection.
Cooling fans running constantly
Ensure the sensor is fully threaded into the block and the ECU is receiving an accurate signal; if the sensor is faulty, it defaults to a 'failsafe' mode causing fans to run at max speed.
Coolant leaking around the sensor base
Verify the thread pitch is correct for your engine and ensure the crush washer is properly seated.
Pros and Cons
Pros
- High-accuracy temperature reporting for improved engine efficiency
- Durable black housing built for long-term thermal resistance
- Standardized 2-pin connector simplifies the replacement process
- Meets or exceeds original equipment specifications
Cons
- Requires specific M12 x 1.5 threading for installation
- Not compatible with all vehicle makes and models
- Requires proper cooling system bleeding after installation to prevent air pockets
Setup, Compatibility & Care
Before installation, ensure the engine is completely cool to avoid burns from pressurized coolant.
- Locate the existing coolant temperature sensor, usually found near the thermostat housing or cylinder head.
- Carefully disconnect the 2-pin wiring harness.
- Using a deep-well socket, remove the old sensor. Be prepared for a small amount of coolant to escape.
- Thread the new XEMS66 sensor into place by hand to ensure the M12 x 1.5 threads align correctly before tightening with a wrench.
- Reconnect the harness until it clicks.
- Top off your coolant levels and bleed the cooling system to remove trapped air.
Regularly inspect the sensor housing during routine oil changes to ensure no corrosion or fluid seepage is present at the connection point.