Product Overview
Cummins 2894943 PACCAR 1869930PE 1861423PE NOx Sensor by Nernex
The Nernex 20.220331 NOx Sensor is a direct-fit aftermarket outlet NOx sensor for applications using Cummins 2894943, PACCAR 1869930PE, PACCAR 1861423PE, Cummins 2871974, and Cummins 4984912. Designed for compatible diesel exhaust aftertreatment systems, this downstream NOx sensor provides the emissions data required to support SCR operation, DEF/urea dosing control, and continuous monitoring of exhaust aftertreatment performance.
Cummins 2894943 PACCAR 1869930PE NOx Sensor Interchange & Cross References
| Manufacturer / Brand | Part Numbers |
|---|---|
| Cummins | 2894943, 2894943NX, 2894943RX, 2894943CUM |
| PACCAR | 1869930PE, 1869930PRX, 1869930 |
| PACCAR | 1861423PE, 1861423PRX, 1861423 |
| Cummins | 2871974, 2871974NX, 2871974RX, 2871974CUM |
| Cummins | 4984912, 4984912NX, 4984912RX, 4984912CUM |
| Continental | 5WK96672A, 5WK9 6672A |
| Skyline | ANX010 |
| Dinex | 5EL001 |
| Dorman | 904-6002 |
| Nernex | 20.220331 |
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 20.220331 monitors NOx levels after exhaust treatment. This feedback allows the vehicle's emissions-control system to evaluate aftertreatment performance and continuously monitor NOx reduction during real-world vehicle operation.
Nernex 20.220331 NOx Sensor Specifications
| Manufacturer | Nernex |
| Part Number | 20.220331 |
| Product Type | Aftermarket NOx Sensor |
| Sensor Position | Outlet / Downstream |
| Voltage | 12 Volt |
| Terminal Type | 4 Pin |
| System Function | NOx measurement and SCR aftertreatment monitoring |
| Warranty | 1 Year / Unlimited Miles |
| California Availability | Available for sale and shipment to California |
Cummins Engine & Heavy-Duty Vehicle Applications
The Nernex 20.220331 outlet NOx sensor is intended for compatible commercial, vocational, and bus applications equipped with the matching Cummins engine and exhaust aftertreatment configuration.
Compatible Cummins Engines: ISB 6.7L, ISX, ISX12, ISX15, QSX15
Compatible Vehicle Makes: Freightliner, Peterbilt, International, Volvo, Western Star, Blue Bird Bus
Sensor Location: Outlet / Downstream NOx Sensor
Primary OEM Application Numbers: 2894943, 1869930PE, 1861423PE, 2871974, 4984912
Direct-Fit Aftermarket NOx Sensor Replacement
The Nernex 20.220331 is intended as a direct-fit aftermarket replacement for the listed Cummins and PACCAR NOx sensor numbers. 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 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.
