CATEngine Parts

128-8945 Water Temperature Sensor — Cat C13 C18

This water temperature sensor is a vital engine monitoring component, accurately measuring the coolant temperature to inform the engine control unit (ECU). It is built to precise standards, providing reliable readings unlike a faulty sensor that may give inaccurate or no data. Operators may observe the temperature gauge reading erratically, the engine overheating warning light illuminating, or the engine running poorly if this sensor fails.

Water Temperature Sensor – Part No 128-8945 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeWater Temperature Sensor
MaterialBrass and electronic components
ApplicationEngine cooling system
Service LifeReplace as needed based on diagnostic testing
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a faulty water temperature sensor might be an inaccurate reading on the temperature gauge or the illumination of the engine warning light. If the sensor fails completely, the engine may run inefficiently, potentially leading to overheating or reduced power output.

Installation Tip

Ensure the engine is completely cool before attempting removal to avoid burns and coolant spillage. Clean the sensor port threads thoroughly to ensure a proper seal and accurate readings.

Service Note

Check the condition of the thermostat and radiator cap when replacing the water temperature sensor, as these components also regulate engine temperature.