VolvoElectrical Parts

21984358 — 24V Nitrogen Oxide Sensor Voe21984358 Voe22219283 5Wk97371 For Volvo Truck Fh4 Fm4 Fh500 Fm500

This is a 24V Nitrogen Oxide (NOx) sensor designed for the exhaust aftertreatment system of specific Volvo truck models. Manufactured to meet OEM standards, it accurately measures NOx levels to ensure compliance with emissions regulations, performing better than a worn or faulty sensor. Operators may notice the check engine light, emissions system warnings, or a reduction in engine power if this sensor is not functioning correctly.

24V Nitrogen Oxide Sensor Voe21984358 Voe22219283 5Wk97371 For Volvo Truck Fh4 Fm4 Fh500 Fm500 – Part No 21984358 – 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 TypeNitrogen Oxide (NOx) Sensor
MaterialHigh-temperature resistant alloys and ceramics
ApplicationExhaust Gas Aftertreatment System (SCR)
Service LifeReplace as needed based on diagnostic testing
CompatibilityVolvo specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial sign of a failing NOx sensor is typically the illumination of the check engine light or a specific emissions system warning message. Continued operation with a faulty sensor can lead to increased emissions, potential engine derating, and failure to meet regulatory standards.

Installation Tip

Ensure the exhaust system is completely cool before attempting to remove the old sensor. Use a suitable wrench to avoid damaging the sensor's electrical connector or housing during installation.

Service Note

Inspect the Diesel Particulate Filter (DPF) and the Selective Catalytic Reduction (SCR) catalyst for signs of clogging or damage when replacing the NOx sensor.