VolvoElectrical Parts

21643804 — Speed Sensor 21643804 For Volvo Fh12 Fh16 Fm9 Fm12 B6R B7R B9R B12B B12M B12R B13R

This speed sensor measures the rotational speed of a component, typically the driveshaft or wheel hub, and transmits this data to the vehicle's control modules for functions like ABS, traction control, or speedometer readings. It is built with durable materials and precise sensing elements to ensure accurate speed detection under various operating conditions, unlike a damaged sensor that might provide erratic or no signal. Operators may observe the ABS warning light illuminating, inaccurate speedometer readings, or issues with cruise control or traction control systems when this sensor malfunctions.

Speed Sensor 21643804 For Volvo Fh12 Fh16 Fm9 Fm12 B6R B7R B9R B12B B12M B12R B13R – Part No 21643804 – 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 TypeSpeed Sensor
MaterialHigh-impact plastic and metal
ApplicationVehicle speed monitoring system (ABS, speedometer)
Service LifeReplace as needed based on diagnostic codes
CompatibilityVolvo OEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a failing speed sensor is often the illumination of the ABS warning light on the dashboard, or erratic speedometer readings. If left unaddressed, the ABS and related traction control systems will cease to function, compromising vehicle safety. The consequence is a reduced ability to control the vehicle during braking or in slippery conditions.

Installation Tip

Before installation, ensure the mounting surface on the wheel hub or axle housing is clean and free of rust or debris. When inserting the sensor, be careful not to force it, and ensure it is fully seated to obtain an accurate reading.

Service Note

When replacing a speed sensor, it is crucial to inspect the corresponding reluctor ring (tone ring) for damage or debris that could affect the sensor's performance.