FITMENT:
Compatible with Detroit Diesel engines used in:

• Freightliner Trucks Cascadia
• Western Star trucks (DD13 / DD15 / DD16 engines)

OEM reference numbers: 5WK97338A, A0101532228, 0101532228.
Used in diesel exhaust aftertreatment system for NOx monitoring (DEF/AdBlue SCR system).
Installed in exhaust system (inlet / upstream position before or within SCR catalyst depending on configuration).
Fitment must be confirmed by OEM number and emission system layout before installation.

FUNCTION:

• Measures NOx levels in exhaust gas (SCR inlet sensor)
• Sends data to ECU/ACM for AdBlue dosing control
• Helps maintain EPA / Euro emissions compliance
• Supports regeneration and aftertreatment efficiency

INSTALLATION POSITION:

• Upstream / inlet NOx sensor (pre-SCR catalyst)
• Mounted on exhaust piping between DPF outlet and SCR inlet

FAQ:

Q1: Is this inlet or outlet sensor?
A1: This is typically the inlet (upstream) NOx sensor for DD13/DD15/DD16 systems.

Q2: What engines does it fit?
A2: Detroit Diesel DD13, DD15, and DD16 engines used in Freightliner Cascadia and Western Star trucks.

Q3: What happens if it fails?
A3: SCR warning light, engine derate, incorrect DEF dosing, and fault codes related to NOx efficiency.

Q4: Is this plug-and-play?
A4: Yes, but SCR system reset or calibration may be required after installation.

Q5: Are inlet and outlet sensors interchangeable?
A5: No. They may look similar but differ in calibration, harness length, and ECU programming.