VolvoElectrical Parts

NT3211806 — 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, measuring the concentration of NOx in the exhaust gas before it enters the selective catalytic reduction (SCR) system. It is engineered for high-temperature resistance and precise measurement accuracy, essential for proper DEF dosing and emissions control, unlike a failing sensor that provides inaccurate data. Operators may notice increased exhaust emissions, the check engine light illuminating with NOx-related codes, or a reduction in engine power due to derating.

Inlet Nitrogen Oxides Nox Sensor 22303391 For Volvo Truck D11 D13 D16 Mack Mp8 – Part No NT3211806 – 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 (Inlet)
MaterialCeramic, Stainless Steel
ApplicationExhaust Aftertreatment System (SCR)
Service LifeReplace every 200,000-300,000 miles or as needed
CompatibilityVolvo 22303391, Mack Mp8
ConditionNew — OEM specification aftermarket

Failure Symptoms

Illumination of the check engine light with diagnostic trouble codes related to NOx emissions is the primary symptom of a failing inlet NOx sensor. If ignored, the SCR system may not function correctly, leading to increased harmful emissions and potential engine derating to comply with emission standards. Continued operation with a faulty NOx sensor can result in costly repairs and potential failure to pass emissions inspections.

Installation Tip

Ensure the exhaust system is cool before attempting to remove the old sensor, as exhaust components can reach very high temperatures. Apply anti-seize compound specifically designed for exhaust sensors to the threads of the new sensor before installation.

Service Note

Inspect the Diesel Exhaust Fluid (DEF) lines, injector, and tank for any signs of contamination or blockage when replacing the NOx sensor.