Product Overview
Cummins 4326870, 2872944, 3687930 Inlet NOx Sensor
Restore commercial fleet emissions-system performance with this premium Dinex 2nd Generation aftermarket Nitrogen Oxide (NOx) sensor. Backed by a 2-Year Unlimited Mileage Warranty, this new inlet NOx sensor is designed as a direct-fit replacement for Cummins 4326870, 2872944, and 3687930, including applicable NX and RX service variations. It also cross-references Dinex 5EL012. Dinex 2nd Generation sensing technology is engineered for accurate communication with compatible vehicle control systems.
Cummins 4326870, 2872944 and 3687930 NOx Sensor Cross References
How to Verify Your Unit: This direct-fit inlet NOx sensor replaces units with an original housing, module, casting, or manufacturing label that matches one of the OEM or supplier cross-reference numbers listed below.
| Manufacturer Cross Reference | Interchange Part Numbers |
|---|---|
| Primary Cummins OEM Cross References | 4326870, 4326870NX, 4326870RX |
| Additional Cummins / PACCAR Cross References | 2872944, 2872944NX, 2872944RX 3687930, 3687930NX, 3687930RX |
| Continental / VDO Cross References | 5WK96740A, 5WK9 6740B |
| Aftermarket Cross References | Dinex 5EL012, Skyline SNX001, Global Emission Systems SENN-0022XF |
Compatible Cummins Engine, Truck and Sensor Applications
Designed for applicable heavy-duty and medium-duty commercial truck configurations using compatible Cummins engines and aftertreatment systems.
- Engine and Emissions Systems: Applicable Cummins aftertreatment SCR systems using an inlet or upstream NOx sensor
- Potential Truck Applications: Kenworth, Peterbilt, Freightliner, International, and other commercial trucks equipped with a compatible Cummins engine and aftertreatment configuration
- Sensor Position: Inlet / upstream position before the SCR catalyst, where applicable
Fitment Verification: Always verify exact compatibility using your vehicle’s VIN number or the original stamped OEM part number on the sensor before placing an order.
Dinex 2nd Generation NOx Sensor Specifications
| Product Type | Nitrogen Oxide (NOx) Sensor |
| Sensor Technology | Dinex 2nd Generation |
| Sensor Position | Inlet / Upstream Pre-SCR Position |
| Voltage System | 12V diesel systems |
| Terminal Connector Type | 4-pin flat plug interface |
| Warranty Protection | 2-Year Unlimited Mileage Warranty |
| Core Requirement | No core charge or core return required |
Order Fulfillment and Core Policy
There is no core charge or core return required for this product. The sensor is purchased outright with no additional core fees or return-shipping requirements.
Orders received by 2:00 PM EST are generally processed for prompt shipment from regional distribution locations. Local counter sales may occasionally affect real-time online inventory. If an availability conflict occurs, our service team will contact you.
Important Fitment Note: NOx sensors can vary by engine family, emissions configuration, sensor position, connector type, and software calibration. Wire harness lengths or protective lead configurations may differ slightly from the original factory sensor. Always match the replacement sensor to the exact part number stamped on the original sensor casing, or verify compatibility using your vehicle’s VIN number and official dealer service information before purchasing. Product images are for reference only.
California Proposition 65 Warning: WARNING: This product can expose you to chemicals known to the State of California to cause cancer or reproductive harm. For more information, visit www.P65Warnings.ca.gov.