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
• Industrial and on-highway vehicles equipped 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: 5491423 / SNS3007 / A3C03886300-01 / A3C0388630001 / 432686500 family equivalent

FAQ

Q1: Are 5491423, SNS3007, and A3C03886300-01 the same sensor?
A1: Yes. 5491423 is the Cummins OE number, SNS3007 is the sensor family code, and A3C03886300-01 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 ISB and QSB 6.7 SCR-equipped engines found in trucks, buses, and industrial applications, depending on emissions 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 with different harness lengths for different mounting positions.

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