CATEngine Parts

4i-5394 Water Temperature Sensor — Cat 3116 311C

This water temperature sensor is essential for accurately measuring the engine coolant temperature, providing critical data to the engine control unit (ECU) or dashboard gauge. It is manufactured to meet stringent OEM quality standards, ensuring precise readings unlike a worn sensor that may provide inaccurate or delayed information. Operators might notice the engine temperature gauge reading incorrectly, the cooling fan not engaging properly, or the ECU triggering fault codes related to engine temperature when this part fails.

Water Temperature Sensor – Part No 4i-5394 – 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, plastic, thermistor
ApplicationEngine cooling system
Service LifeReplace every 4,000 hours or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

An initial sign of a failing water temperature sensor can be erratic readings on the temperature gauge, such as fluctuating wildly or showing a constant cold or hot indication. If the sensor fails completely, the engine control unit may not receive any temperature data, potentially leading to improper fuel mixture or fan operation. Operating the engine without accurate temperature feedback can result in inefficient combustion or overheating.

Installation Tip

Ensure the engine coolant has cooled completely before attempting removal to avoid burns. Clean the sensor port threads carefully to prevent debris from entering the cooling system.

Service Note

Check the engine coolant level and condition, and inspect the radiator cap and hoses for any signs of damage or leaks.