
Walker 1004-1043 Nitrogen Oxide (NOx) Sensor - SCR Catalyst Inlet
Walker Genuine OE NOx Sensor 1004-1043
Walker Genuine OE NOx Sensor 1004-1043 is built for diesel and gasoline emission systems that rely on accurate nitrogen oxide monitoring. With OE-style connectors, a 590.00 wiring harness length, and a specific-fit design, it supports direct replacement service for vehicles that use a square, 4-terminal, female connector layout.
For technicians servicing SCR-equipped systems, this sensor helps maintain precise exhaust aftertreatment control. It is a practical choice for domestic and import applications, including Ford F-250 and Ram 2500 service work where NOx sensor replacement is required.
Key Features
- Walker Genuine OE line for OE-level fit and function
- Part number 1004-1043 for direct identification
- Specific-fit NOx sensor with OE connector and harness length
- Black gloss finish with black connector housing
- 4-terminal, female connector with square shape
- Built for SCR emission systems and exhaust environments
- Cross-references Sunsong 2205166 for the same application
Product Details
Walker Products Genuine OE NOx sensors are produced by Tier 1 OE suppliers using the same material standards and precision manufacturing practices used by leading vehicle makers. This sensor measures nitrogen oxide levels in the exhaust stream so the control system can manage aftertreatment performance, protect downstream components such as diesel particulate filters, and maintain engine efficiency. The 1004-1043 is a direct replacement for vehicles that require the listed connector style and harness configuration, making it a straightforward option for Ford F-250 and Ram 2500 emission system repair.
What It Helps Address
- NOx sensor fault codes related to exhaust emissions monitoring
- SCR system performance issues caused by inaccurate NOx readings
- Aftertreatment control problems that affect DPF protection
- Emission system drivability concerns tied to sensor failure
- Service replacement for worn or heat-damaged exhaust sensors
Installation Notes and Tips
Verify connector shape, terminal count, connector gender, and harness length before installation. This is a specific-fit sensor, so match the OE connector layout and routing path to the original unit. Inspect the exhaust-side mounting area, wiring condition, and nearby heat shielding before installing the replacement. For fitment-based searches, this part is commonly referenced for Ford F-250 and Ram 2500 NOx sensor service.
Quality Assurance
Walker Genuine OE sensors are manufactured to OE supplier standards and field-tested for heat, vibration, and corrosive exhaust exposure. The 1004-1043 is engineered for dependable emission-system service in demanding diesel and gasoline applications.
Original: $337.74
-65%$337.74
$118.21Walker 1004-1043 Nitrogen Oxide (NOx) Sensor - SCR Catalyst Inlet
Walker Genuine OE NOx Sensor 1004-1043
Walker Genuine OE NOx Sensor 1004-1043 is built for diesel and gasoline emission systems that rely on accurate nitrogen oxide monitoring. With OE-style connectors, a 590.00 wiring harness length, and a specific-fit design, it supports direct replacement service for vehicles that use a square, 4-terminal, female connector layout.
For technicians servicing SCR-equipped systems, this sensor helps maintain precise exhaust aftertreatment control. It is a practical choice for domestic and import applications, including Ford F-250 and Ram 2500 service work where NOx sensor replacement is required.
Key Features
- Walker Genuine OE line for OE-level fit and function
- Part number 1004-1043 for direct identification
- Specific-fit NOx sensor with OE connector and harness length
- Black gloss finish with black connector housing
- 4-terminal, female connector with square shape
- Built for SCR emission systems and exhaust environments
- Cross-references Sunsong 2205166 for the same application
Product Details
Walker Products Genuine OE NOx sensors are produced by Tier 1 OE suppliers using the same material standards and precision manufacturing practices used by leading vehicle makers. This sensor measures nitrogen oxide levels in the exhaust stream so the control system can manage aftertreatment performance, protect downstream components such as diesel particulate filters, and maintain engine efficiency. The 1004-1043 is a direct replacement for vehicles that require the listed connector style and harness configuration, making it a straightforward option for Ford F-250 and Ram 2500 emission system repair.
What It Helps Address
- NOx sensor fault codes related to exhaust emissions monitoring
- SCR system performance issues caused by inaccurate NOx readings
- Aftertreatment control problems that affect DPF protection
- Emission system drivability concerns tied to sensor failure
- Service replacement for worn or heat-damaged exhaust sensors
Installation Notes and Tips
Verify connector shape, terminal count, connector gender, and harness length before installation. This is a specific-fit sensor, so match the OE connector layout and routing path to the original unit. Inspect the exhaust-side mounting area, wiring condition, and nearby heat shielding before installing the replacement. For fitment-based searches, this part is commonly referenced for Ford F-250 and Ram 2500 NOx sensor service.
Quality Assurance
Walker Genuine OE sensors are manufactured to OE supplier standards and field-tested for heat, vibration, and corrosive exhaust exposure. The 1004-1043 is engineered for dependable emission-system service in demanding diesel and gasoline applications.
Product Information
Product Information
Shipping & Returns
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Description
Walker Genuine OE NOx Sensor 1004-1043
Walker Genuine OE NOx Sensor 1004-1043 is built for diesel and gasoline emission systems that rely on accurate nitrogen oxide monitoring. With OE-style connectors, a 590.00 wiring harness length, and a specific-fit design, it supports direct replacement service for vehicles that use a square, 4-terminal, female connector layout.
For technicians servicing SCR-equipped systems, this sensor helps maintain precise exhaust aftertreatment control. It is a practical choice for domestic and import applications, including Ford F-250 and Ram 2500 service work where NOx sensor replacement is required.
Key Features
- Walker Genuine OE line for OE-level fit and function
- Part number 1004-1043 for direct identification
- Specific-fit NOx sensor with OE connector and harness length
- Black gloss finish with black connector housing
- 4-terminal, female connector with square shape
- Built for SCR emission systems and exhaust environments
- Cross-references Sunsong 2205166 for the same application
Product Details
Walker Products Genuine OE NOx sensors are produced by Tier 1 OE suppliers using the same material standards and precision manufacturing practices used by leading vehicle makers. This sensor measures nitrogen oxide levels in the exhaust stream so the control system can manage aftertreatment performance, protect downstream components such as diesel particulate filters, and maintain engine efficiency. The 1004-1043 is a direct replacement for vehicles that require the listed connector style and harness configuration, making it a straightforward option for Ford F-250 and Ram 2500 emission system repair.
What It Helps Address
- NOx sensor fault codes related to exhaust emissions monitoring
- SCR system performance issues caused by inaccurate NOx readings
- Aftertreatment control problems that affect DPF protection
- Emission system drivability concerns tied to sensor failure
- Service replacement for worn or heat-damaged exhaust sensors
Installation Notes and Tips
Verify connector shape, terminal count, connector gender, and harness length before installation. This is a specific-fit sensor, so match the OE connector layout and routing path to the original unit. Inspect the exhaust-side mounting area, wiring condition, and nearby heat shielding before installing the replacement. For fitment-based searches, this part is commonly referenced for Ford F-250 and Ram 2500 NOx sensor service.
Quality Assurance
Walker Genuine OE sensors are manufactured to OE supplier standards and field-tested for heat, vibration, and corrosive exhaust exposure. The 1004-1043 is engineered for dependable emission-system service in demanding diesel and gasoline applications.












