Keep Emissions Accurate with Cummins X15 ISX15 NOx Sensor 2013–2021 OEM 4326870
What is it?
The NOx Sensor (OEM 4326870) is a precision engine component engineered for the Cummins X15 and ISX15 engines manufactured between 2013 and 2021. It continuously measures nitrogen oxide levels in the exhaust stream, giving your aftertreatment system the data it needs to manage emissions and maintain performance.
Why choose this sensor?
Tailored specifically for the 2013–2021 Cummins X15/ISX15 engine series, this OEM sensor restores dependable NOx measurement. A failed or inaccurate sensor can result in engine derates, emissions faults, or failed testing—this part helps ensure your readings are precise and your system operates as intended.
Key Benefits
✅ Monitors NOx levels with high precision for effective emissions control
✅ Helps avoid engine derates and emissions fault codes
✅ Built to withstand high exhaust temperatures and heavy-duty use
✅ Direct-fit replacement—no modifications needed
✅ Manufactured to meet OEM specifications for reliability and durability
Applications
Ideal for commercial vehicles and equipment powered by Cummins X15 or ISX15 engines (2013–2021) that rely on accurate emissions data for regulatory compliance and optimal system performance.
Installation Notes
Before installation, ensure the exhaust path upstream of the sensor is free of soot or blockage. Replace any worn sealing washers and ensure the electrical connection is secure. After installation, reset fault codes and validate sensor output through diagnostic tools to confirm correct operation.
Final Thoughts
If you’re experiencing NOx sensor faults, engine derates, or inconsistent emissions readings, upgrading to the OEM 4326870 NOx Sensor is a smart solution. With direct-fit engineering and factory-quality reliability, it helps keep your engine’s emissions system accurate and your truck road-ready.