Description
Product Overview
Part Name: Nitrogen NOx Oxygen Sensor
Part Numbers: 5WK96749B, 4326872, 2872942, 4326872RX, A045S169, A2C95992000-01
Vehicle Compatibility: Cummins Diesel Engines (US Models) – Designed for EPA Tier 4 emission-compliant Cummins ISX, ISB, and QSX diesel engines powering trucks, buses, and industrial vehicles (2014–2024)
Configuration: OEM-style NOx sensor built for accurate nitrogen oxide detection in high-temperature exhaust environments. Features robust construction with high heat tolerance and vibration resistance for reliable long-term performance.
Function: Detects NOx levels in exhaust gases and transmits real-time readings to the ECU. Ensures precise DEF injection control and supports compliance with U.S. EPA Tier 4 emission regulations while improving combustion efficiency.
Technical Specifications
Type: Nitrogen Oxide (NOx) Oxygen Sensor
Material: Corrosion-resistant stainless steel probe with a ceramic sensing element and heat-insulated wiring harness
Application: Fits Cummins Tier 4 diesel engines (2014–2024) using NOx sensor references 5WK96749B / 4326872 / 2872942 / 4326872RX / A045S169 / A2C95992000-01
Cross-Reference: Equivalent to Cummins OE part numbers above; compatible with OEM SCR and DEF systems across U.S. heavy-duty platforms
Installation: Direct-fit replacement; mounts into OEM exhaust port and connects to the factory wiring harness without modification
Service Interval: Replace when NOx or SCR fault codes (P2201, P229F) appear, or when DEF consumption or emission efficiency declines
Delivery & Availability
Stock Options: High-quality aftermarket Cummins NOx sensors available
Delivery Time: 3–7 days internationally
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