FITMENT:
Compatible with Cummins Inc. diesel engines used in heavy-duty trucks equipped with SCR emission systems, including:

• Peterbilt 579
• Kenworth T680 / T880 platforms
• International Trucks ProStar

Used in diesel exhaust aftertreatment system for NOx monitoring (DEF/AdBlue SCR system).
Installed in exhaust system (inlet or outlet position depending on engine and SCR configuration).
Fitment must be confirmed by OEM part number, engine model (ISX/X15), and emission system layout before installation.

FAQ:

Q1: How do I confirm compatibility?
A1: This sensor must match your original OEM part number and SCR system setup on Cummins ISX/X15 engines. Connector type and voltage (typically 24V heavy-duty systems) must also match.

Q2: Where is this NOx sensor installed?
A2: It is installed in the SCR exhaust aftertreatment system, either upstream or downstream of the SCR catalyst depending on configuration.

Q3: What are common failure symptoms?
A3: Check engine light, SCR/DEF warning, incorrect NOx readings, reduced engine power, or forced derate mode.

Q4: Is this the same across Peterbilt, Kenworth, and International trucks?
A4: Not exactly—these trucks may share Cummins engines, but NOx sensors differ by OEM part number and SCR system design.

Q5: Does installation require programming?
A5: Some vehicles require diagnostic reset or SCR system calibration after replacement.