FITMENT
Compatible with Cummins Inc. diesel engines equipped with SCR (Selective Catalytic Reduction) systems requiring NOx monitoring.
Common applications include Cummins heavy-duty engines used in on-highway trucks, buses, and industrial equipment using reference 5WK96674A / 2871978 / 2894939.

FAQ
Q1: What is the function of this NOx sensor?
A1: It measures nitrogen oxide concentration in exhaust gases and sends real-time signals to the ECU for SCR dosing control and emissions compliance.

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

Q3: What are symptoms of failure?
A3: Engine warning light, SCR/DEF system fault codes, increased emissions, and possible engine derating.

Q4: Is it compatible with all Cummins engines?
A4: No, compatibility depends on engine model, emissions standard, and SCR system design.