VolvoElectrical Parts

22303391 — Inlet Nitrogen Oxides Nox Sensor 22303391 For Volvo Truck D11 D13 D16 Mack Mp8

This Inlet Nitrogen Oxides (NOx) Sensor is a critical component of the exhaust aftertreatment system in Volvo and Mack engines. It measures the amount of NOx in the exhaust stream before and after the SCR catalyst, allowing the engine control module (ECM) to precisely manage diesel exhaust fluid (DEF) injection for optimal emissions control. A faulty NOx sensor can lead to increased emissions, poor fuel economy, and potential engine derating or shutdown.

Inlet Nitrogen Oxides Nox Sensor 22303391 For Volvo Truck D11 D13 D16 Mack Mp8 – Part No 22303391 – 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 TypeNOx Sensor
MaterialCeramic and metal alloy
ApplicationExhaust aftertreatment system
Service LifeReplace as indicated by diagnostic codes
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a failing inlet NOx sensor is typically an illuminated check engine light or a specific emissions system warning. If the sensor continues to malfunction, the engine's emissions control system will operate inefficiently, leading to higher NOx output and potentially triggering engine derating to prevent further damage. The primary risk is non-compliance with emissions regulations and potential damage to the SCR catalyst due to improper DEF dosing.

Installation Tip

Ensure the exhaust system is cool before attempting removal and installation. Carefully clean the threads of the exhaust port to ensure proper sealing and prevent damage to the sensor.

Service Note

After replacing the NOx sensor, it is crucial to perform a diagnostic system regeneration and clear any related fault codes.