Walker 1004-1025 Nitrogen Oxide (NOx) Sensor - SCR Catalyst Outlet or Turbocharger Outlet Pipe

Walker Genuine OE NOx Sensor 1004-1025

Walker Genuine OE NOx Sensor 1004-1025 is built for diesel and gasoline emission systems that rely on accurate nitrogen oxide monitoring. It uses OE-style connectors and harness length for a direct replacement on specific applications, with coverage for demanding exhaust environments.

Key Features

• Part number 1004-1025 Genuine OE nitrogen oxide (NOx) sensor
• Specific-fit design with OE connector and harness length
• 4-pin female connector with square connector shape
• 390.00 harness length and 20.00 wire gauge measurement
• Built for selective catalytic reduction (SCR) aftertreatment systems
• Gloss finish, black connector color, multi-colored sensor body
• Engineered for heat, vibration, and corrosive exhaust exposure

Product Details

Walker Products Genuine OE sensors are produced to OE-level standards by Tier 1 OE suppliers, using materials and manufacturing methods aligned with modern emission control requirements. This NOx sensor measures exhaust nitrogen oxide levels so the SCR system can manage aftertreatment performance, helping protect downstream components such as diesel particulate filters and supporting efficient engine operation. Part number 1004-1025 is a direct replacement choice for drivers and fleets that need precise emission-system feedback on domestic and import vehicles, including applications such as Ford F-250 and Ram 2500 where NOx sensor performance is critical.

This part cross-references Bosch (e.g., 5WK96753B) and Cummins (e.g., 2872947) for the same application.

What It Helps Address

• NOx sensor fault codes related to exhaust emissions monitoring
• SCR system performance issues caused by inaccurate NOx readings
• Reduced aftertreatment efficiency in diesel emission systems
• Stress on DPF and related exhaust components from poor sensor feedback
• Drivability concerns tied to emission-system faults on Ford F-250 and Ram 2500 applications

Installation Notes

Use this specific-fit Walker NOx sensor on the exact application listed by the vehicle catalog. Match the OE connector style, terminal layout, and harness length before installation. Because NOx sensors are mounted in the exhaust stream, inspect the connector, wiring, and surrounding exhaust components for heat damage or corrosion before replacing the sensor. Confirm the vehicle calibration and sensor location requirements for the application, especially on Ford F-250 and Ram 2500 diesel emission systems.

Quality Assurance

Walker Genuine OE emission sensors are manufactured to OE-level standards and field-tested for use in high-heat, high-vibration exhaust environments. Part number 1004-1025 is built for consistent NOx measurement and dependable operation in SCR-equipped vehicles.