Description
Product Overview
Part Name: Nitrogen NOx Oxygen Sensor (Outlet Position)
Part Numbers: 5WK96742B, 4326873, A045S170, A2C95991800-01, SNS142B
Vehicle Compatibility: Cummins Diesel Engines (US Models) – Designed for EPA Tier 4 emission systems in trucks, buses, and heavy machinery using ISB, ISL, and ISX engines. Specifically functions as an outlet NOx sensor located downstream of the SCR catalyst (2014–2024).
Configuration: OEM-style outlet NOx sensor optimized for precise post-treatment exhaust monitoring. Built to withstand high thermal stress and provide reliable feedback for DEF (Diesel Exhaust Fluid) dosing and emissions management.
Function: Monitors NOx concentration in exhaust gases after SCR treatment and reports data to the ECU. Enables closed-loop emissions control for compliance with U.S. EPA standards and optimal DEF efficiency.
Technical Specifications
Type: Nitrogen Oxide (NOx) Oxygen Sensor – Outlet Position
Material: Stainless steel probe with high-temperature ceramic core and reinforced heat-resistant wiring
Application: Fits Cummins Tier 4 engines (2014–2024) using outlet NOx sensor references 5WK96742B / 4326873 / A045S170 / A2C95991800-01 / SNS142B
Cross-Reference: Equivalent to Cummins OE part numbers above; fully compatible with OEM SCR and DEF emission systems
Installation: Direct-fit replacement; mounts on post-SCR exhaust section and connects to OEM wiring harness
Service Interval: Replace when NOx fault codes occur, emissions efficiency drops, or outlet sensor drift is detected via diagnostics
Delivery & Availability
Stock Options: High-quality aftermarket Cummins outlet NOx sensors available
Delivery Time: 3–7 days internationally
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