Description
Product Overview
Part Name: Nitrogen NOx Oxygen Sensor
Part Numbers: 5WK96741B, 4326874, 2872946, 4326874RX, A045S171, A2C95991400-01
Vehicle Compatibility: Cummins Engines (US Models) – Designed for EPA Tier 4 diesel engines powering trucks, buses, agricultural, and off-road equipment with SCR (Selective Catalytic Reduction) systems (2014–2024)
Configuration: OEM-style NOx sensor engineered to detect and measure nitrogen oxide concentrations in diesel exhaust. Delivers accurate feedback to the ECU to ensure efficient DEF injection and reduced emissions.
Function: Monitors NOx levels in the exhaust stream, allowing precise control of the AdBlue/DEF system to meet U.S. EPA standards while maintaining optimal engine performance and fuel efficiency.
Technical Specifications
Type: Nitrogen Oxide (NOx) Oxygen Sensor
Material: Heavy-duty stainless steel probe with ceramic sensing element and high-temperature shielded wiring harness
Application: Fits Cummins Tier 4 diesel engines (2014–2024) using NOx sensor references 5WK96741B / 4326874 / 2872946 / 4326874RX / A045S171 / A2C95991400-01
Cross-Reference: Equivalent to Cummins OE part numbers above; compatible with OEM SCR and DEF exhaust after-treatment systems
Installation: Direct-fit replacement; mounts in the OEM exhaust location and connects to the factory harness without modifications
Service Interval: Replace when the check engine light appears, NOx system fault codes (P2201, P229F) are detected, or SCR performance decreases
Delivery & Availability
Stock Options: High-quality aftermarket Cummins NOx sensors available
Delivery Time: 3–7 days internationally
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