Precision Emissions Monitoring with Cummins X15 ISX15 NOx Sensor 2013–2021 OEM 4326874
What is it?
The NOx Sensor (OEM 4326874) is a high-accuracy emissions sensor designed for the Cummins X15 and ISX15 engines built between 2013 and 2021. It measures nitrogen oxide levels in the exhaust stream, providing vital data for your engine’s after-treatment system and maintaining regulatory compliance.
Why choose this sensor?
Specifically engineered for the 2013–2021 Cummins X15 and ISX15 engine families, this sensor ensures reliable NOx detection and helps prevent emissions-related faults and derates. Replacing an old or failing sensor with a genuine OEM unit restores accurate feedback and restores stable operation.
Key Benefits
✅ Provides precise NOx readings to support emissions control
✅ Helps prevent engine derates and fault codes
✅ Built for high-temperature exhaust environments and heavy-duty cycles
✅ Direct-fit replacement—no modifications required
✅ Meets 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 emission monitoring and reliable after-treatment system performance.
Installation Notes
Ensure the installation area upstream of the sensor is free of soot, debris, or damage. Replace any worn sealing washers, verify connector integrity, and tighten the sensor to the specified torque value. After installation, clear fault codes and observe NOx readings in diagnostics to confirm proper function.
Final Thoughts
If your engine is suffering from emissions faults, derating, or inconsistent NOx values, upgrading to the OEM 4326874 NOx Sensor is the choice to regain accurate emissions control. With factory-match fitment and engineering reliability, it helps keep your truck compliant and road-ready.