GPD 1815199 Nitrogen Oxide NOx Sensor Direct Fit Replacement

The GPD 1815199 is a direct-fit replacement Nitrogen Oxide (NOx) sensor engineered to restore proper emissions monitoring to your vehicle's exhaust aftertreatment system. Designed by Global Parts Distributors (GPD), this sensor meets or exceeds OEM fit, form, and function standards, making it a reliable solution for restoring accurate NOx measurement without modification.

What is a NOx Sensor?

A NOx sensor is a critical component in modern diesel engine aftertreatment systems. It monitors the concentration of nitrogen oxide (NO and NO2) in the exhaust stream and transmits real-time data to the engine control unit (ECU). The ECU uses this information to regulate the selective catalytic reduction (SCR) system and optimize DEF (diesel exhaust fluid) dosing, keeping emissions within regulatory limits and preventing fault codes.

Key Features:

• Direct fit replacement — installs in place of the original sensor with no modifications required
• Designed to meet/exceed OEM specifications — matches factory fit, form, and function
• Application specific — engineered for the correct position (upstream or downstream) per vehicle application
• Durability tested — every new GPD sensor design undergoes durability validation before release
• Restores emissions compliance — eliminates NOx-related diagnostic trouble codes (DTCs) and check engine lights
• Built to withstand the high-temperature, high-vibration environment of the exhaust system

GPD (Global Parts Distributors) is a nationally recognized distributor of aftermarket automotive and heavy-duty engine management parts, with a product line focused on quality, fit accuracy, and competitive pricing. The GPD 1815199 NOx sensor is sold as a single sensor.