CATEngine Parts

2w-8915-5n-8857 Water Temperature Sensor — Cat 3406

This is a Water Temperature Sensor for CAT engines, specifically designed to monitor the coolant temperature and send accurate readings to the engine control unit or gauge. It is built with high-quality materials to ensure reliable performance across a wide temperature range, unlike a faulty sensor which may provide erratic or incorrect readings. Operators may notice inaccurate temperature gauge readings, the engine overheating warning light illuminating, or the engine running hotter than normal.

Water Temperature Sensor – Part No 2w-8915-5n-8857 – 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 every 5,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing water temperature sensor is often an inaccurate reading on the temperature gauge, showing either too high or too low. If ignored, the engine may continue to operate outside its optimal temperature range, leading to reduced efficiency or potential overheating damage. The worst consequence is severe engine damage due to prolonged overheating if the cooling system is not properly managed.

Installation Tip

Ensure the engine is completely cool before attempting to remove the old sensor to avoid burns. Do not overtighten the new sensor, as this can damage the threads in the engine block or the sensor itself.

Service Note

Check the coolant level and condition, and inspect the thermostat and radiator for proper operation when replacing the water temperature sensor.