Standard Ignition NOX021 Nitrogen Oxide (NOx) Sensor - Downstream

OE-Style NOx Sensor for Downstream Emissions Control

The Standard Ignition NOX021 is a direct-fit nitrogen oxide sensor for downstream emissions monitoring on select 2016 Chevrolet and GMC heavy-duty applications. It is built for proper fit, form, and function, with a plug-and-play design that does not require additional programming.

Key Features

• Direct-fit OE replacement for straightforward installation
• Downstream NOx sensor for emissions system monitoring
• Plug-and-play design with no additional programming required
• Female connector with a square connector shape
• 6-pin male terminals for the specified application
• Extensively tested and validated for performance and reliability
• Standard Ignition NOX021 cross-references OE and aftermarket numbers for the same application

Detailed Product Overview

Standard Ignition NOX021 is engineered for vehicles that rely on accurate downstream nitrogen oxide readings to support emissions system operation. It is a direct replacement for the original sensor on 2016 Chevrolet Express 2500, Chevrolet Express 3500, Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Savana 2500, GMC Savana 3500, GMC Sierra 2500 HD, and GMC Sierra 3500 HD. The connector layout includes one female square connector with six male pin terminals, helping ensure the sensor matches the factory connection point.

This part cross-references OE and aftermarket numbers such as 12665216 and DNX021 for the same application. The NOX021 part number is also useful when searching for a replacement NOx sensor for 2016 Chevrolet Silverado 2500 HD downstream or 2016 GMC Sierra 3500 HD downstream service needs.

Common Issues This Sensor May Address

• Fault codes related to downstream NOx sensor performance
• Incorrect nitrogen oxide readings in the emissions system
• Check engine light concerns tied to NOx monitoring
• Emissions inspection failures caused by sensor malfunction
• Driveability issues linked to emissions system faults

Installation Notes and Tips

Verify the connector shape, terminal count, and downstream position before installation. This sensor is a plug-and-play replacement, so no additional programming is required after installation. Confirm vehicle application by year, make, model, and position to ensure the NOX021 matches the original sensor location on your Chevrolet or GMC truck or van.

Quality Assurance

Standard Ignition states that this sensor undergoes extensive testing and validation to support proper performance and reliable operation. As a global manufacturer, the company maintains quality control throughout the production process.