The Nitrogen Oxide (NOx) sensor plays a vital role in modern diesel emissions systems by monitoring NOx levels in the exhaust and guiding the engine control unit (ECU) to adjust diesel exhaust fluid (DEF) dosing for optimal emissions performance. For Cummins X15 and ISX15 engines from 2013 to 2021, accurate NOx sensing is critical to keeping the Selective Catalytic Reduction (SCR) system working efficiently and maintaining regulatory compliance. The Cummins X15, ISX15 NOx Sensor OEM 4326872 from Tamerx Diesel Parts offers a direct OEM-matched replacement to help ensure your emissions system functions as designed.
• Delivers precise NOx monitoring to provide real-time exhaust data that helps the ECU optimize DEF dosing and support cleaner exhaust output
• Exact fit for Cummins X15 & ISX15 engines ensuring correct installation, seamless integration, and dependable operation with factory emissions system components
• Supports efficient SCR system performance by enabling accurate measurements that maintain proper DEF balance and reduce the likelihood of fault codes
• Built to OEM specifications (4326872) providing dependable durability, consistent performance, and full compatibility with original NOx sensor hardware
• Ideal for highway and heavy-duty use where reliable NOx feedback and ongoing emissions monitoring are essential for smooth engine operation
Replacing a failing NOx sensor with the Cummins X15, ISX15 NOx Sensor OEM 4326872 from Tamerx Diesel Parts helps restore proper emissions system monitoring and supports long-term exhaust system performance. Investing in a quality, OEM-matched NOx sensor ensures your engine maintains accurate NOx measurement, helping protect your emissions system and keep your vehicle operating as expected.




































