Fitment
Compatible with PACCAR MX13 diesel emission systems (inlet NOx sensor)

Vehicle applications include:
Kenworth T680
Kenworth W900
Peterbilt 579
Peterbilt 389
Peterbilt 567
PACCAR MX13 engine platforms using part numbers 2236409 / 2236409PE / 2236409PEX

FAQ

Q1: What is the function of this NOx sensor?
A1: It measures nitrogen oxide concentration in exhaust gases at the inlet of the SCR system for emission control.

Q2: Where is this sensor installed?
A2: It is installed upstream (inlet side) of the SCR catalyst in the exhaust aftertreatment system.

Q3: Is this an inlet or outlet sensor?
A3: This part number is for the inlet NOx sensor position.

Q4: Is part number matching required?
A4: Yes, exact part number matching (2236409 / PE / PEX variants) is required for correct compatibility.

Q5: Are all MX13 trucks using the same sensor?
A5: No, compatibility depends on engine generation and aftertreatment configuration.