GPD 1815175 Nitrogen Oxide NOx Sensor Direct Fit Replacement

The GPD 1815175 is a direct-fit replacement Nitrogen Oxide (NOx) sensor engineered to restore proper emissions system function. NOx sensors are a critical component in diesel aftertreatment systems, providing real-time measurement of nitrogen oxide concentrations in the exhaust stream and transmitting that data to the engine control unit (ECU). The ECU uses this information to regulate the Selective Catalytic Reduction (SCR) system and maintain emissions compliance.

Key Features:

• Direct-fit replacement — no modifications required for installation
• Designed to meet or exceed OEM fit, form, and function
• Durability tested on every new design
• Application-specific engineering for precise sensor performance
• Helps prevent diagnostic trouble codes (DTCs) related to NOx circuit faults
• Supports proper SCR system operation and emissions compliance

GPD (Global Parts Distributors) is a national distributor of aftermarket automotive and heavy-duty engine management, HVAC, and heat exchange components. With decades of industry experience, GPD delivers quality aftermarket parts built to perform in demanding conditions. The GPD 1815175 NOx sensor is sold as a single unit.