VolvoEngine Parts

21396128 Temperature Sesnor — Volvo FMX FE Series trucks — FH400

This temperature sensor accurately monitors the engine coolant temperature, providing vital data to the engine control unit (ECU) for optimal performance and protection. Manufactured to meet rigorous Volvo truck standards, it offers reliable readings unlike a faulty sensor that might provide erratic or incorrect temperature data. Operators may observe incorrect temperature gauge readings, the engine running too hot or too cold, or the activation of warning lights if this sensor malfunctions.

Temperature Sesnor – Part No 21396128 – Volvo Spare Part
Part Specifications
BrandVolvo
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 TypeEngine Coolant Temperature Sensor
MaterialBrass, electronic components
ApplicationEngine cooling system
Service LifeReplace as needed based on condition
CompatibilityVolvo truck series specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

An initial sign of a failing temperature sensor can be an inaccurate or fluctuating temperature gauge reading. If left unaddressed, the engine control unit may receive incorrect data, leading to suboptimal engine performance or overheating. This can result in increased wear on engine components due to improper temperature regulation.

Installation Tip

Ensure the engine is completely cool before attempting removal to avoid burns and coolant loss. Do not overtighten the new sensor into the engine block, as this can damage the threads.

Service Note

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