Precision SCR Downstream Emissions Monitoring | Resolves Engine Derates
Clear active fault codes and restore full engine operating power with this genuine Cummins 4386862RX downstream outlet Nitrogen Oxide (NOx) Sensor. Engineered specifically for EPA13 heavy-duty Cummins diesel engines, this smart sensor directly measures post-catalyst exhaust gas concentrations to verify the operational efficiency of your Selective Catalytic Reduction (SCR) system.
A failed or contaminated NOx sensor sends erratic signal outputs to the ECM, resulting in false emissions readings, forced DPF regenerations, check engine lights, and eventual severe 5-mph vehicle derates. Installing a genuine Cummins factory-remanufactured sensor guarantees exact digital communication across the engine J1939 CAN bus network, protecting your fleet from costly unscheduled downtime.
100% Genuine Cummins ReCon: Rebuilt to zero-mile OEM performance standards; factory-tested for resistance, signal stability, and high-temperature durability.
Rigid Protective Boxing: Shipped with factory thread anti-seize and a protective ceramic tip plastic shield intact inside a thick corrugated outer shipping box.
Sensor Type: Smart Sensing Probe with Integrated Electronics Module
Placement: Exhaust Pipe Outlet / SCR Downstream Positioning
Thread Size: M20 x 1.5 Exhaust Port Thread
System Voltage: 12-Volt Vehicle Architecture
Reman Status: Factory Cummins "RX" Exchange Assembly
Cummins Base / Production Numbers: 4326862, 4326862NX
Superseded Part Numbers: 2872946, 2872946NX, 2872946RX
Continental / VDO Cross Reference: 5WK9 6742B, 5WK96742B
Direct fitment for commercial highway trucks, vocational chassis, and transit buses equipped with Cummins EPA13 emissions engines:
Engine Platforms: Cummins ISX15, X15, ISL9, L9, and ISB6.7 platforms.
Commercial Truck Applications: Widespread fitment across Freightliner, Kenworth, Peterbilt, International, Volvo, and Western Star heavy-duty Class 7 and Class 8 trucks.