VolvoEngine Parts

21636091 — Nitrogen Oxide Nox Sensor 5Wk96644 21636091 For Volvo Engine D13 Truck Vn Vnl Vhd

This Nitrogen Oxide (NOx) sensor is a vital part of the engine's exhaust aftertreatment system, measuring the amount of NOx in the exhaust gases to optimize the Selective Catalytic Reduction (SCR) system. It ensures the engine complies with emissions regulations by providing accurate data to the engine control module, differing from a faulty sensor that sends incorrect readings. Operators may notice the 'Check Engine' or 'Malfunction Indicator Lamp' (MIL) illuminate, a reduction in engine power (limp mode), or increased exhaust emissions when this sensor malfunctions.

Nitrogen Oxide Nox Sensor 5Wk96644 21636091 For Volvo Engine D13 Truck Vn Vnl Vhd – Part No 21636091 – 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 TypeNitrogen Oxide (NOx) Sensor
MaterialStainless Steel, Ceramic
ApplicationExhaust Aftertreatment System (SCR)
Service LifeReplace as indicated by diagnostic trouble codes (DTCs)
CompatibilityVolvo D13 Engine (VN, VNL, VHD)
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing NOx sensor is usually the illumination of the Malfunction Indicator Lamp (MIL) or 'Check Engine' light. If the issue persists, the engine may enter a reduced power mode (limp mode) to prevent further emissions violations. The risk to equipment includes potential failure to pass emissions testing and damage to the SCR system components if incorrect data is continuously supplied.

Installation Tip

Ensure the exhaust system is cool before attempting to remove the old sensor to avoid burns. Apply anti-seize compound specifically designed for exhaust sensors to the threads of the new sensor before installation.

Service Note

After replacing a NOx sensor, it is often necessary to clear diagnostic trouble codes (DTCs) and perform an engine control module (ECM) relearn procedure.