Walker 1004-1026 Nitrogen Oxide (NOx) Sensor - SCR Catalyst Inlet

Walker Genuine OE NOx Sensor 1004-1026

Walker Genuine OE NOx Sensor 1004-1026 is built for diesel and gasoline emission systems that rely on accurate nitrogen oxide monitoring. This specific-fit sensor uses OE-style connectors and harness length for direct replacement in SCR-equipped applications, including domestic and import vehicles such as Ford F-250 and Ram 2500 platforms where precise aftertreatment control matters.

Key Features

• Genuine OE line NOx sensor for emission control applications
• Specific-fit design with OE connector shape and harness length
• 4-terminal, female connector with male blade terminals
• Multi-colored, matte-finish sensor assembly
• Built for high-heat, vibration, and corrosive exhaust environments
• Supports SCR system monitoring and aftertreatment performance

Product Details

Walker Products Genuine OE sensors are produced to OE supplier standards using materials and manufacturing processes aligned with modern emission-system requirements. Part number 1004-1026 is engineered for accurate NOx measurement in selective catalytic reduction systems, helping maintain proper exhaust aftertreatment operation and protect downstream components such as diesel particulate filters. The 590.00 harness length and oblong white connector support a direct, plug-and-play style replacement where the original sensor uses the same configuration. This part cross-references 22303390 for the same application.

What It Helps Address

• NOx sensor fault codes related to inaccurate exhaust gas readings
• SCR system performance issues caused by sensor drift or failure
• Aftertreatment inefficiency that can affect emissions control
• DPF protection concerns tied to incorrect NOx monitoring
• Drivability problems linked to emission-system diagnostics on Ford F-250 and Ram 2500 applications

Installation Notes

Verify connector style, terminal count, and harness length before installation. This is a specific-fit sensor, so match the original routing and mounting location on the vehicle before connecting the harness. For service work on Ford F-250, Ram 2500, and other SCR-equipped diesel applications, inspect the exhaust-side connector and wiring for heat damage or corrosion before installing Walker 1004-1026.

Quality Assurance

Walker Genuine OE NOx sensors are manufactured by Tier 1 OE suppliers and built to OE-level material and precision standards. Part number 1004-1026 is field-proven for demanding exhaust environments and backed by Walker Products’ technical support and expanding emission-system coverage.