FITMENT
Compatible with Cummins diesel engines equipped with SCR (Selective Catalytic Reduction) AdBlue emission systems requiring NOx monitoring.
Common applications include:

• Cummins ISX / ISB / X-series diesel engines (varies by emission calibration)
• Heavy-duty trucks and commercial vehicles using SCR aftertreatment systems
• EPA / Euro 5 / Euro 6 emission control systems

Using reference numbers:

• 4326769
• 2139930
• 1928760
• 1953520
• 5WK97348A (Continental/Bosch sensor family cross-reference)

FAQ
Q1: What is the function of this NOx sensor?
A1: It measures nitrogen oxide (NOx) levels in the exhaust system and sends real-time data to the ECU to control AdBlue/DEF injection and reduce emissions.

Q2: Where is it installed?
A2: It is mounted in the SCR exhaust aftertreatment system, typically before or after the catalytic converter depending on engine setup.

Q3: What are symptoms of failure?
A3: Check engine light, SCR/AdBlue system warnings, NOx sensor fault codes, reduced engine power, or engine derating (limp mode).

Q4: Are all listed part numbers interchangeable?
A4: They are cross-reference OEM and supplier numbers for the same Cummins SCR NOx sensor family, but exact fitment depends on engine model and ECU calibration.