VolvoElectrical Parts

3944123 — Coolant Temperature Sensor 20576626 3944123 For Volvo Truck Fh12 Fh16 Fl6 Fm7 Fm12

This coolant temperature sensor accurately monitors the engine's operating temperature, sending critical data to the engine control module (ECM). It is manufactured to meet stringent OEM standards, ensuring reliable performance and durability compared to worn sensors that provide inaccurate readings. Operators may notice erratic temperature gauge readings, poor fuel economy, or engine overheating warnings when this sensor begins to fail.

Coolant Temperature Sensor 20576626 3944123 For Volvo Truck Fh12 Fh16 Fl6 Fm7 Fm12 – Part No 3944123 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryElectrical 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

Disconnect main battery before working on electrical components. Use dielectric grease on all connector pins. Check ground connections — most electrical faults trace to poor grounds. Test with multimeter before installing new parts.

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

Part TypeCoolant Temperature Sensor
MaterialBrass, electronic components
ApplicationEngine cooling system
Service LifeReplace every 4,000 hrs or as needed
CompatibilityVolvo OEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing coolant temperature sensor include fluctuating temperature gauge readings or the check engine light illuminating. If ignored, the ECM may continue to receive incorrect data, leading to inefficient engine operation and increased fuel consumption. Prolonged operation with an inaccurate sensor can contribute to engine stress and potential overheating.

Installation Tip

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

Service Note

Inspect the coolant level and condition, and check the thermostat and radiator hoses for any signs of deterioration when replacing the coolant temperature sensor.