NOx Sensor 12V for VN Truck, D13A DSL 13.0L (2006-2008), Mack D11 D13 D16 – Replaces 55WK97366, 22303391, 20789066, 21346963, 4620954, 904-6033, 21302276 OEM

What is the vehicle’s first line of defence against harmful emissions? It’s the unsung hero under the hood - the NOx sensor. It helps monitor nitrogen oxide (NO & NO2) levels in the exhaust system, ensuring clearer and smoother engine functioning and complying with strict environmental standards (Tier 4 Stage V). That’s why we have added this aftermarket part — a direct replacement of specified OEMs and brands (check the complete list below).

• Premium Material: We have designed this nitrogen oxide sensor from robust materials - metal and plastic for exceptional performance. It will effectively withstand soot buildup, ECU water ingress, and cable damage. Our NOx sensors are durable products following rigorous testing, ensuring your vehicle runs smoothly.
• Functionality: Our NOX sensor replacement monitors engine emissions (nitrogen oxides level in the exhaust system), which is strictly regulated by authorities. It’s a high-temperature device that’s perfect for a long-haul diesel rig, optimizing engine operation, delivering real-time accuracy, improving fuel efficiency, and reducing pollutants. 
• Compatibility List: This nitrogen oxide sensor is designed to fit specified OEMs and certain brands of make, year, model, and engine. It will provide unmatched performance, enabling uninterrupted performance. For a seamless fit, consider checking the compatibility list before getting one. Check the diesel NOx sensor’s fitment details below:-
• Compatible with Other Brands & Their Part Numbers:
  • Replaces OE Aftermarket: 5WK96631G, 12665215
• Compatible with Make, Model Year, & Engine:
  • Fits GMC Silverado Sierra 1500/2500/3500 6.6L: 2010-2016
• Replacement Guide: If you’re questioning when to replace the NOx sensor, then thoroughly check why it fails. The possible reasons for failures are mentioned below:-
  • Excessive soot/ash content in the exhaust gas. The sensor head will be black.
  • Contaminated exhaust gases or engine oil contamination. It indicates worn-out engine components.
  • Damaged wire protector.
  • Visible damage.
  • Lacking or excessive supply voltage due to a short circuit, sudden voltage spikes, or an external power source.
  • Direct contact with condensate during operation.
  • Poor fuel economy and increased emissions.
• Consider These Points When Installing:
  • Troubleshoot all the above issues before installing the product.
  • Pay attention to its designation when replacing.
  • Installed in the exhaust system, typically both before (upstream) and after (downstream) the SCR (Selective Catalytic Reduction) unit.
  • Check the power supply. Utilize a multimeter to see power, and it must be within 9-36 Volts (12V nominal) at the sensor connector.
  • Follow the NOx sensor replacement instructions provided by the vehicle’s manufacturer.
  • Amid signs of abnormal function, check that the correct sensor is selected for its location (upstream or downstream).
  • Do not wash or submerge the sensor.
  • Do not use any spraying agents or chemicals to clean or paint them.
  • Do not place it close to bends (when installing in a non-designated place), as the turbulence will disturb proper operation.
  • Ensure the sensor wires are hanging tension-free and create a 180-degree loop for safe play distance.
  • Do not wind or bend the wire.
  • Seeking professional assistance is one of effective and quick ways to install this nitrogen oxide sensor.