Fitment

Fits for:

• Cummins ISB / QSB / ISL SCR (Euro 5 / Euro 6 diesel applications depending on configuration)
• Light-duty and medium-duty Cummins engines using SCR / AdBlue emissions systems
• Bus, truck, and industrial applications with Cummins aftertreatment systems
• Engine: Cummins ISB6.7 / QSB6.7 SCR platforms (depending on OEM calibration)
• Position: Exhaust NOx sensor (inlet or outlet depending on SCR layout)
• OE / Cross References: 5491422 / SNS3008A / A3C03886400-01 / A3C0388640001 / 432686500 family equivalent

FAQ

Q1: Are 5491422, SNS3008A, and A3C03886400-01 the same sensor?
A1: Yes. 5491422 is the Cummins OE number, SNS3008A is the sensor family code, and A3C03886400-01 is the Continental/Vitesco manufacturing reference used for the same NOx sensor module in SCR systems.

Q2: What engines use this sensor?
A2: It is commonly used on Cummins ISB and QSB diesel engines with SCR (AdBlue) emissions systems in trucks, buses, and industrial equipment.

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

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