FITMENT
Compatible with Cummins diesel engines equipped with SCR (Selective Catalytic Reduction) AdBlue emission systems requiring NOx monitoring.
Common applications include heavy-duty trucks and industrial diesel engines using the SNS3501 sensor platform within SCR aftertreatment systems.

Typical usage:

• Cummins ISB / ISX / X-series diesel engines (application varies by calibration)
• Euro 5 / Euro 6 SCR emission control systems
• Commercial truck exhaust aftertreatment systems

Reference:

• SNS3501 (NOx sensor family designation used in SCR systems)

FAQ
Q1: What does this NOx sensor do?
A1: It measures nitrogen oxide (NOx) levels in the exhaust and sends data to the ECU to control AdBlue injection and reduce emissions.

Q2: Where is it installed?
A2: It is mounted on the exhaust system, usually before or after the SCR catalytic converter depending on system design.

Q3: What are failure symptoms?
A3: Check engine light, SCR/AdBlue warnings, NOx sensor fault codes, reduced engine performance, or limp mode activation.

Q4: Is SNS3501 interchangeable with SNS3502?
A4: They are closely related in the same sensor family, but compatibility depends on engine model and ECU calibration.