Maintain Emissions Accuracy with Cummins X15 ISX15 NOx Sensor 2013–2021 OEM 4326872
What is it?
The NOx Sensor (OEM 4326872) is an essential component for the Cummins X15 and ISX15 engines manufactured between 2013 and 2021. It monitors nitrogen oxide levels in the exhaust system, supplying vital feedback to the engine control unit for precise emissions regulation.
Why choose this sensor?
Specifically designed for the Cummins X15 and ISX15 engine families (2013–2021), this sensor restores proper emissions monitoring and system functionality. A failing or inaccurate NOx sensor can lead to fault codes, engine derates, or failed emissions checks. Installing a genuine OEM-grade sensor ensures accurate readings and system reliability.
Key Benefits
✅ Delivers precise NOx measurement to support emissions control systems
✅ Helps prevent engine derate and emissions-related fault codes
✅ Built to endure high exhaust-gas temperatures and demanding duty cycles
✅ Direct-fit replacement—no modifications required
✅ Manufactured to meet OEM standards for durability and performance
Applications
Ideal for heavy-duty trucks powered by Cummins X15 or ISX15 engines (2013–2021) that depend on accurate emissions measurement and proper aftertreatment system operation.
Installation Notes
Ensure the exhaust path ahead of the sensor is free of soot or debris before installation. Replace any worn sealing washers and ensure the connector is securely attached. After fitting the sensor, clear fault codes and verify NOx values in diagnostics to confirm correct operation.
Final Thoughts
If you’re experiencing emissions fault codes, unexpected derates, or inconsistent NOx feedback, the OEM 4326872 NOx Sensor is the precision replacement you need. With direct-fit engineering and factory-level reliability, it keeps your engine’s emissions system accurate and compliant.