Fitment

Fits for:

• Cummins QSB / QSL / ISC / ISL / ISX SCR (Euro 5 / Euro 6 diesel applications depending on configuration)
• Off-highway and on-highway Cummins engine platforms with SCR (AdBlue) aftertreatment systems
• Industrial, construction, and heavy-duty vehicles using Cummins emission control systems
• Engine: Cummins QSB 4.5 / QSB 6.7 / ISL / ISX SCR systems (depending on OEM calibration)
• Position: Exhaust NOx sensor (inlet or outlet depending on SCR layout)
• OE / Cross References: 4384393 / SNS3012 / A2C14507500-04 / 4384393NX / 4326865 family equivalent

FAQ

Q1: Are 4384393, SNS3012, and A2C14507500-04 the same sensor?
A1: Yes. 4384393 is the Cummins OE number, SNS3012 is the sensor family code, and A2C14507500-04 is the Continental/Vitesco manufacturing reference for the same NOx sensor used in SCR systems.

Q2: What engines use this sensor?
A2: It is commonly used on Cummins QSB and related SCR-equipped engines in off-highway machinery and select on-highway applications, depending on emissions configuration and ECU calibration.

Q3: Is this inlet or outlet sensor?
A3: It can be used as either inlet or outlet depending on SCR system layout. The same sensor family is used across different positions with varying harness lengths and mounting configurations.

Q4: What does this sensor do?
A4: It measures nitrogen oxide (NOx) levels in exhaust gases and sends data to the ECU, allowing precise control of AdBlue (urea) dosing for emissions compliance and SCR efficiency.