The Walker Products Nitrogen Oxide (NOx) Sensor (part number 1004-1033) is a direct-fit replacement for 2023-2025 Kenworth and Peterbilt vehicles with 12.9L engines. NOx sensors in vehicle exhaust systems measure nitrogen oxide emissions, aiding ECM in emissions control for compliance with environmental regulations and ensuring efficient operation of systems like Selective Catalytic Reduction (SCR)
Features:
- Plug-and-Play Installation – Designed for direct OE replacement, reducing install time and eliminating compatibility issues.
- Engineered for Precision – Features advanced sensing technology and exact OE materials for consistent, high-accuracy NOx detection in extreme conditions.
- Fleet-Tested Reliability – Proven in demanding commercial and diesel applications for reduced downtime and fewer replacements.
- Accurate Emission Control – Delivers precise NOx readings to help maintain peak SCR system efficiency and lower emissions.
Specifications:
| Number of Terminals | 4 |
| Connector Type | Spade |
| Connector Shape | Square |
| Connector Gender | Male |
| Terminal Gender | Female |
| Fit Type | Direct Fit |
Fits: 2023-2025 Kenworth and Peterbilt models including T680, T800, T880, W900, W990, 365, 367, 389 and more — 12.9L engines.
Confirm the year, make, model, and engine against your vehicle before ordering. Full application data is shown in the fitment lookup on this page.
Fitment Notes: EPA21; 12V
Interchanges With: Paccar Parts 2347656PE, DAF 2236118, DAF AAA21038900, DAF 2265455
WARNING: This product can expose you to chemicals, including Nickel and Nickel Alloyed Stainless Steel, which are known to the State of California to cause cancer or birth defects or other reproductive harm.
