Fitment
Compatible with Cummins 6.7L diesel emission systems (SCR / EPA 2013–2018 platforms)

Vehicle applications include:
Ram 2500
Ram 3500
Ram 4500
Ram 5500
Cummins Inc. 6.7L ISB engine platform

FAQ

Q1: What is the function of this upstream NOx sensor?
A1: It measures nitrogen oxide levels before the SCR catalyst and sends data to control DEF (urea) injection and emissions efficiency.

Q2: Where is it installed?
A2: It is installed upstream of the SCR catalyst in the exhaust aftertreatment system.

Q3: Is this sensor the same as downstream NOx sensor?
A3: No, upstream and downstream sensors are different and not interchangeable.

Q4: Is part number required for replacement?
A4: Yes, exact OEM matching is required because Ram Cummins systems use multiple sensor calibrations.

Q5: What are common failure symptoms?
A5: Check engine light, SCR/DEF warnings, NOx sensor fault codes, and reduced engine power (derate).