Fitment
Compatible with diesel emission systems (SCR / Cummins-based platforms)

Vehicle applications include:
Ram 2500
Ram 3500
Cummins Inc. ISB / 6.7L Cummins engine platforms
Other Dodge/Ram heavy-duty diesel vehicles using part number 68067521AA / 5WK9 6684A

FAQ

Q1: What is the function of this NOx sensor?
A1: It measures nitrogen oxide levels in diesel exhaust and sends signals to the SCR system to control AdBlue/DEF injection and reduce emissions.

Q2: Where is this sensor installed?
A2: It is installed in the exhaust aftertreatment system, typically before or after the SCR catalyst depending on configuration.

Q3: Is part number matching required?
A3: Yes, exact matching of 68067521AA / 5WK9 6684A is required for correct compatibility.

Q4: Is this used with Cummins engines?
A4: Yes, it is commonly used with 6.7L Cummins diesel engines in Ram heavy-duty trucks.

Q5: What are common failure symptoms?
A5: Check engine light, SCR/DEF system faults, NOx sensor error codes, or reduced engine power mode.