Product Overview
Cummins 4326869 PACCAR 1954666PE Outlet NOx Sensor by Nernex
The Nernex 20.220337 NOx Sensor is a direct-fit aftermarket outlet NOx sensor for applications using Cummins 4326869 and PACCAR 1954666PE. These are the primary current replacement numbers for this sensor family, which also includes 1906307PE and Cummins 2872947. Designed for compatible diesel exhaust aftertreatment systems, this downstream sensor provides accurate NOx measurement used to support SCR performance, DEF/urea dosing control, and continuous monitoring of exhaust emissions.
Cummins 4326869 PACCAR 1954666PE NOx Sensor Interchange & Cross References
| Manufacturer / Brand | Part Numbers |
|---|---|
| Cummins | 4326869, 4326869NX, 4326869RX, 4326869CUM |
| PACCAR | 1954666PE, 1954666PRX, 1954666 |
| PACCAR | 1906307PE, 1906307PRX, 1906307 |
| Cummins | 2872947, 2872947NX, 2872947RX |
| Continental | 5WK96753A, 5WK9 6753A, 5WK96753B, 5WK9 6753B, A2C34968000-01, A2C3496800001, A2C34968000 |
| Dinex | 5EL013 |
| Global Emission Systems | SENN-0032XF |
| Skyline | ANX003, SNX003 |
| Dorman | 904-6006 |
| Walker | 285-1004 |
| FSS Emission Products | 26869-FSS |
| Nernex | 20.220337 |
Nernex NOx Sensor Technology
Nernex develops emissions-sensing products around the precise measurement and control required by modern diesel exhaust aftertreatment systems. Nernex NOx sensor electronics and software are designed to provide accurate exhaust-gas data to the vehicle control system, helping regulate DEF/urea dosing and support effective Selective Catalytic Reduction (SCR) of NOx emissions.
As an outlet / downstream NOx sensor, the Nernex 20.220337 monitors NOx levels after exhaust treatment. This feedback allows the vehicle's emissions-control system to evaluate SCR performance and continuously monitor NOx reduction during real-world vehicle operation.
Nernex 20.220337 NOx Sensor Specifications
| Manufacturer | Nernex |
| Part Number | 20.220337 |
| Product Type | Aftermarket NOx Sensor |
| Sensor Position | Outlet / Downstream / Post-SCR |
| Voltage | 12 Volt |
| Terminal Type | 4 Pin |
| Emissions Application | EPA10 / EPA13 |
| System Function | NOx measurement and SCR aftertreatment monitoring |
| Warranty | 1 Year / Unlimited Miles |
| California Availability | Available for sale and shipment to California |
Cummins, PACCAR & Heavy-Duty Vehicle Applications
The Nernex 20.220337 outlet NOx sensor is intended for compatible commercial, vocational, and transit applications equipped with the matching Cummins or PACCAR engine and exhaust aftertreatment configuration.
Compatible Cummins Engines: ISB, QSB, ISL, B6.7
Compatible PACCAR Engines: PX-6, PX-7, PX-8, PX-9
Kenworth: T680, T880
Peterbilt: 567, 579
International: ProStar
Freightliner: Business Class M2 106
Bus / Transit: Blue Bird Vision, Thomas Built Saf-T-Liner C2, Gillig
Sensor Location: Outlet / Downstream / Post-SCR NOx Sensor
Primary Current OEM Numbers: 4326869, 1954666PE
Additional OEM Application Numbers: 1906307PE, 2872947
Direct-Fit Aftermarket NOx Sensor Replacement
The Nernex 20.220337 is intended as a direct-fit aftermarket replacement for the listed Cummins and PACCAR NOx sensor numbers. The current primary numbers for this sensor family are 4326869 and 1954666PE. Before ordering, verify the original stamped sensor part number, outlet sensor position, 12-volt electrical system, 4-pin connector configuration, and vehicle or engine application. Matching the number stamped on the original NOx sensor is the most reliable way to confirm compatibility.
Product images are for reference only. Always verify the original sensor part number, sensor location, voltage, and connector configuration before installation.
California Proposition 65 Warning: WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer or reproductive harm. For more information go to www.P65Warnings.ca.gov.
