Product Overview
PACCAR 1954665PE Cummins 4326874 Outlet NOx Sensor by Nernex
The Nernex 20.220322 NOx Sensor is a direct-fit aftermarket outlet NOx sensor for applications using PACCAR 1954665PE and Cummins 4326874. These are the primary high-traffic replacement numbers for this sensor family, which also includes Cummins 2872946 and A045S171. Designed for compatible diesel exhaust aftertreatment systems, this downstream NOx sensor provides accurate emissions data used to support SCR performance, DEF/urea dosing control, and continuous monitoring of exhaust aftertreatment efficiency.
PACCAR 1954665PE Cummins 4326874 NOx Sensor Interchange & Cross References
| Manufacturer / Brand | Part Numbers |
|---|---|
| PACCAR | 1954665PE, 1954665PRX, 1954665 |
| Cummins | 4326874, 4326874NX, 4326874RX, 4326874CUM |
| Cummins | 2872946, 2872946NX, 2872946RX, 2872946CUM, A045S171 |
| Continental / VDO | 5WK96741B, 5WK9 6741B, 5WK96751C, 5WK9 6751C, 5WK96751A, 5WK9 6751A, A2C95991400-01, A2C9599140001, A2C95991400 |
| Dorman | 904-6013 |
| Walker | 285-1003 |
| Global Emission Systems | SENN-0023XF |
| FSS Emission Products | 54665-FSS |
| Skyline | SNX002, ANX002 |
| Nernex | 20.220322 |
| Dinex | 5EL005 |
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 20.220322 monitors NOx concentration after SCR treatment. This feedback allows the vehicle's emissions-control system to evaluate aftertreatment performance and continuously monitor NOx reduction during real-world operation.
Nernex 20.220322 NOx Sensor Specifications
| Manufacturer | Nernex |
| Part Number | 20.220322 |
| Product Type | Aftermarket NOx Sensor |
| Sensor Position | Outlet / Downstream / Post-SCR |
| Voltage | 12 Volt |
| System Function | NOx measurement and SCR aftertreatment monitoring |
| Warranty | 1 Year / Unlimited Miles |
| California Availability | Available for sale and shipment to California |
PACCAR PX & Cummins ISB 6.7L Applications
The Nernex 20.220322 outlet NOx sensor is intended for compatible Kenworth, Peterbilt, and International applications equipped with the matching PACCAR or Cummins engine and exhaust aftertreatment configuration.
Compatible PACCAR Engines: PX-6, PX-7
Compatible Cummins Engines: ISB 6.7L
Compatible Truck Makes: Kenworth, Peterbilt, International
Sensor Location: Outlet / Downstream / Post-SCR NOx Sensor
Primary High-Traffic OEM Numbers: 1954665PE, 4326874
Additional OEM Application Numbers: 2872946, A045S171
Direct-Fit Aftermarket NOx Sensor Replacement
The Nernex 20.220322 is intended as a direct-fit aftermarket replacement for the listed PACCAR and Cummins NOx sensor numbers. The primary search and replacement numbers for this sensor family are 1954665PE and 4326874. Before ordering, verify the original stamped sensor part number, outlet sensor position, 12-volt electrical system, 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.
