VolvoElectrical Parts

20451990 — Temperature Sensor 20889280 20451990 For Volvo Truck Fh Vm Bus B11R B5Lh B7R B12B B12M B9L B9R

This is a temperature sensor, a vital component that measures the coolant temperature within your Volvo truck or bus engine. It provides crucial data to the engine control unit (ECU) for managing engine performance, fuel efficiency, and emissions. A faulty sensor can lead to incorrect temperature readings, causing the engine to overheat or run inefficiently, potentially resulting in reduced power and increased fuel consumption.

Temperature Sensor 20889280 20451990 For Volvo Truck Fh Vm Bus B11R B5Lh B7R B12B B12M B9L B9R – Part No 20451990 – 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 TypeTemperature Sensor
MaterialMetal and plastic
ApplicationEngine cooling system
Service LifeReplace as needed based on function
CompatibilityVolvo specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing temperature sensor may cause the engine temperature gauge to display inaccurate readings, either too high or too low. If ignored, this can lead to the engine running in an inefficient state, potentially causing increased fuel consumption and emissions, or even leading to overheating and internal engine damage. Operating an engine with a faulty temperature sensor risks compromising its longevity.

Installation Tip

Allow the engine to cool completely before removing the old sensor to avoid scalding from hot coolant. Ensure the mating surface is clean and free of debris before installing the new sensor to guarantee a proper seal.

Service Note

When replacing the temperature sensor, inspect the coolant level and condition, and check the radiator and hoses for any leaks or signs of wear.