GPD 1815186 Nitrogen Oxide NOx Sensor Direct Fit Replacement

The GPD 1815186 is a direct-fit replacement Nitrogen Oxide (NOx) sensor engineered to restore proper emissions monitoring and engine management function. Manufactured by Global Parts Distributors (GPD), this sensor is designed to meet or exceed OEM fit, form, and function standards for a precise, no-modification installation.

NOx sensors are a critical component in diesel and gasoline exhaust aftertreatment systems. The sensor continuously monitors nitrogen oxide concentrations in the exhaust stream and transmits real-time data to the engine control unit (ECU). The ECU uses this data to regulate the Selective Catalytic Reduction (SCR) system, optimize fuel delivery, and maintain compliance with emissions regulations. A failed or degraded NOx sensor can trigger check engine lights, cause SCR system faults, and may result in reduced engine performance or limp mode.

Key Features:

• Direct-fit OEM replacement — no modifications required
• Designed to meet or exceed OEM specifications for fit, form, and function
• Durability tested on every new design
• Application-specific engineering for accurate sensor placement and signal output
• Restores proper NOx monitoring and SCR system operation
• Helps eliminate emissions-related diagnostic trouble codes (DTCs)

GPD (Global Parts Distributors, LLC) is a national aftermarket parts distributor with decades of experience supplying high-quality HVAC, heat exchange, and engine management components. The GPD 1815186 NOx sensor is sold as a single unit and is intended for North American vehicles.