Premium OEM Replacement Nitrogen Oxide (NOx) Sensor Assembly

A Nitrogen Oxide (NOx) sensor monitors the concentration of nitrogen oxide gases in the vehicle's exhaust system. The sensor sends emissions data to the vehicle's engine and emissions control systems.

• Emissions Monitoring: Measures NOx levels in the exhaust.
• SCR System Control: Provides data used by the emissions system to manage diesel exhaust treatment.
• Engine Management: Supports correct emissions system operation.
• Diagnostic Monitoring: Helps the vehicle identify emissions-related faults.

A defective NOx sensor can cause warning lights, fault codes, reduced engine performance or emissions system faults.

Common symptoms of a faulty or failing NOx sensor can include:

• Check engine or emissions warning light
• SCR or aftertreatment system warning
• NOx-related diagnostic trouble codes
• Reduced engine performance or power
• Increased fuel consumption
• AdBlue / DEF system warnings on applicable vehicles
• Failed emissions testing
• Vehicle entering a reduced-power or protection mode

Diagnostic testing should be carried out before replacing the sensor because wiring, connectors and other emissions components can produce similar symptoms.

This is a high-quality aftermarket replacement NOx sensor supplied by D2P Autoparts. It is not represented as a genuine Cummins, Freightliner, International, Kenworth, Peterbilt, Volvo, Mack or other vehicle manufacturer part.

The sensor is engineered as a direct replacement for the listed OE and interchange numbers and is designed to provide reliable emissions monitoring on compatible applications.

This NOx sensor is specified for the tail pipe position on compatible applications.

Exact installation location can vary depending on the vehicle, engine, exhaust configuration and emissions system. Always compare the original sensor and OE part number before installation.

This NOx sensor uses a 4-pin electrical connector configuration:

• Pin 1: VCC
• Pin 2: CANL
• Pin 3: CANH
• Pin 4: GND

Always verify the connector, wiring configuration and original sensor specification before installation.

Professional installation by a qualified technician is strongly recommended. NOx sensor replacement may require specialist diagnostic equipment and knowledge of heavy-duty diesel SCR emissions systems.

• Correct sensor positioning is required.
• The electrical connector must be correctly installed.
• The exhaust system can become extremely hot during operation.
• Diagnostic equipment may be required after installation.
• Fault codes may need to be cleared after sensor replacement.
• SCR system operation should be verified following installation.

Not necessarily. Depending on the vehicle and fault condition, diagnostic equipment may be required to clear stored fault codes and confirm that the new sensor is communicating correctly with the vehicle's emissions control system.

If the original fault was caused by damaged wiring, connectors, another emissions component or an underlying SCR system problem, replacing the sensor alone may not resolve the fault.

The sensor is listed for a wide range of heavy-duty applications, including:

• Freightliner: 114SD, Cascadia, Columbia, Coronado and XC models
• International / Navistar: 5900i, 7600, 8600 TranStar, 9900i, HX, LT625, LoneStar, ProStar and WorkStar models
• Kenworth: C500, T660, T700, T800, T680, T880 and W900
• Peterbilt: 320, 365, 367, 384, 386, 388, 389, 520, 567, 579 and 587
• Volvo / Mack: Volvo VNL and Mack CXU
• Western Star: 4900EX, 4900FA, 4900SA and 6900XD
• Coach / Bus / Chassis: Roadmaster, Spartan Motors and Van Hool applications

Always verify the exact OE number, engine and vehicle application before purchasing.

This product includes an Extended Warranty under the following terms:

• 10-Year Extended Warranty: Applies when installed by a fully qualified professional.
• Activation: Provide a copy of the garage fitment invoice within 30 days of installation.
• Standard Coverage: If no invoice is submitted within 30 days of purchase, coverage defaults to a standard 1-year warranty.
• Coverage Scope: Warranty covers the product only and excludes labour charges and additional expenses.

Professional installation documentation should be retained as proof of installation for warranty validation.

To confirm 100% compatibility before purchasing, we recommend the following:

• Check Vehicle Model & Year: Confirm your vehicle is included in the compatibility list.
• Check Engine: Confirm the engine and emissions configuration match the listed application.
• Match OE Part Numbers: Compare your original sensor number against 4326872RX, 4326872, 2872942 and 2872942NX.
• Check Interchange Numbers: Compare against 5WK96749, 904-6015 and A045S169 where applicable.
• Check Connector: Confirm the original sensor uses the same 4-pin connector configuration.
• Contact Us: Provide your VIN and original sensor part number so compatibility can be checked before purchase.

Matching the OE part number on your existing factory sensor is the most reliable way to confirm correct fitment.