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

• Cummins ISX / X15 series engines (SCR-equipped variants depending on calibration)
• Heavy-duty truck platforms using Cummins aftertreatment systems
• Industrial and commercial diesel engines with Euro 5 / Euro 6 emission systems

Using reference numbers:

• 5WK97103B (Continental/Bosch sensor family reference)
• Common SCR system NOx sensor configuration used in Cummins aftertreatment setups

This sensor is part of the SCR exhaust system, measuring nitrogen oxide (NOx) levels and helping regulate AdBlue dosing.

FAQ
Q1: What is the function of this NOx sensor?
A1: It measures NOx levels in the exhaust and sends data to the ECU to control AdBlue/DEF injection and reduce emissions.

Q2: Where is it installed?
A2: It is installed in the SCR exhaust aftertreatment system, typically upstream or downstream of the catalytic converter depending on configuration.

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

Q4: Is it interchangeable with 5WK97103A or 5WK97104A?
A4: These are closely related sensor variants, but compatibility depends on ECU calibration and engine emission system version. Always verify OEM cross-reference before replacement.