Standard Ignition NOX001 Nitrogen Oxide (NOx) Sensor - Downstream

OE Replacement NOx Sensor for GM Diesel Applications

The Standard Ignition NOX001 is a direct-fit nitrogen oxide sensor for downstream emission monitoring on select Chevrolet and GMC trucks and vans. It is built for proper fit, form, and function, with plug-and-play installation and no additional programming required.

• Direct-fit OE replacement for downstream NOx sensing
• Plug-and-play design with no additional programming required
• Female connector with square housing
• 6-pin male terminals for secure electrical connection
• Extensively tested for performance and reliability
• Fits Chevrolet Express 2500, Chevrolet Express 3500, Silverado 2500 HD, Silverado 3500 HD, GMC Savana 2500, GMC Savana 3500, Sierra 2500 HD, and Sierra 3500 HD applications

Fitment and Application Details

Compatible with downstream emission control systems on 2010-2014 Chevrolet Express 2500, 2010-2014 Chevrolet Express 3500, 2011-2014 Chevrolet Silverado 2500 HD, 2011-2014 Chevrolet Silverado 3500 HD, 2010-2014 GMC Savana 2500, 2010-2014 GMC Savana 3500, 2011-2014 GMC Sierra 2500 HD, and 2011-2014 GMC Sierra 3500 HD. This part cross-references Dorman OE Solutions 904-421 for the same application.

What This Sensor Helps Address

• NOx sensor fault codes related to downstream emissions monitoring
• Check engine lights caused by failed nitrogen oxide sensor readings
• Incorrect exhaust aftertreatment data in diesel emission systems
• Driveability issues tied to emission system faults
• Inspection failures caused by emissions-related diagnostic trouble codes

Installation Notes

Use this sensor as a direct OE-style replacement for the original downstream unit. The connector is female with a square shape, and the terminal layout is 6-pin male, which supports straightforward installation when the vehicle harness matches the original configuration. Verify the application by year, make, model, and downstream position before installation.

Quality Assurance

Standard Ignition manufactures this NOX001 sensor with complete in-process quality control and validation testing to support proper performance. The part is produced as an OE replacement to maintain fit and function on the listed Chevrolet and GMC applications.