Walker 1004-1041 Nitrogen Oxide (NOx) Sensor - Turbocharger Outlet Pipe

Walker Genuine OE NOx Sensor 1004-1041

Walker Genuine OE NOx Sensor 1004-1041 is built for diesel and gasoline emission systems that rely on accurate nitrogen oxide monitoring. It uses OE-style connectors, a specific-fit design, and a 890 mm harness length for direct replacement service in demanding exhaust environments.

For technicians servicing SCR-equipped vehicles, this Walker NOx sensor supports precise aftertreatment control and dependable signal delivery. It is a practical choice for emission repairs on domestic and import applications, including Ford F-250 and Ram 2500 service needs where OE-level fit and connector layout matter.

Key Features

• Genuine OE line sensor for emission control systems
• Specific-fit design with OE connector and harness length
• 4-terminal configuration with female connector and male terminals
• Gray body with gloss finish
• Built for SCR system NOx measurement in harsh exhaust conditions
• Part number 1004-1041 for easy identification

Product Details

Walker Products Genuine OE NOx sensors are produced by Tier 1 OE suppliers using materials and manufacturing standards aligned with leading vehicle makers. Accurate NOx measurement is critical for SCR aftertreatment performance, helping the system manage emissions correctly and protect downstream components such as diesel particulate filters. Part number 1004-1041 is engineered as a direct replacement for vehicles that require a square, black female connector with a 4-terminal layout and a 890 mm harness.

This part cross-references 4326476 and A044C669 for the same application. If you are replacing a failed sensor on a Ford F-250, Ram 2500, or similar diesel emission system, Walker 1004-1041 provides the OE-style connection and fitment profile needed for a clean repair.

What It Helps Address

• NOx sensor fault codes
• SCR system performance issues
• Incorrect exhaust emissions readings
• Aftertreatment control problems
• DPF protection concerns caused by inaccurate NOx data

Installation Notes

Verify connector shape, terminal count, and harness length before installation. This is a specific-fit sensor, so match the OE connector style and routing path to the original unit. Inspect the exhaust-side mounting area for corrosion, heat damage, or wiring wear before installing part number 1004-1041.

Quality Assurance

Walker Genuine OE sensors are produced to OE-level standards by Tier 1 suppliers and are field-tested for use in high-heat, high-vibration, and corrosive exhaust environments. The brand line focuses on direct-fit emission components with OE-style connectors and harness dimensions for consistent service replacement.