GPD Downstream Nitrogen Oxide NOx Sensor Direct Fit

The GPD Downstream Nitrogen Oxide (NOx) Sensor is a direct-fit replacement NOx sensor, also known as an oxides of nitrogen sensor or exhaust NOx sensor. It is designed to monitor nitrogen oxide levels in the exhaust stream after the aftertreatment system, so the engine control module can check emissions system performance.

Key Features:

• Direct-fit design: Made to replace the original sensor without modification.
• Downstream position: Measures NOx in the exhaust after the catalyst or SCR system.
• Emissions monitoring: Gives the engine computer the data it needs to regulate emissions control and diagnostics.
• Quality construction: Built to handle the heat, vibration, and exhaust conditions of everyday use.

A failing NOx sensor can trigger check engine lights, emissions-related fault codes, or reduced performance. Replacing it helps restore proper emissions system operation. Choose the specific part number in this product line that matches your application.