FITMENT:
Compatible with Volvo Trucks FH and FM series trucks equipped with SCR emission systems.
Compatible with Mack Trucks MP7 and MP8 engines used in highway and vocational applications.
OEM reference numbers: 22303391, 5WK97366.
Used in diesel exhaust aftertreatment system for NOx monitoring (AdBlue/DEF SCR system).
Installed in exhaust system (commonly downstream/outlet position after SCR catalyst depending on configuration).
Fitment must be confirmed by OEM part number and emission system setup before installation.

FAQ:

Q1: How do I confirm compatibility?
A1: Match OEM number 22303391 or 5WK97366 with your original sensor and verify connector type, wiring length, and SCR system configuration.

Q2: Where is this NOx sensor installed?
A2: It is installed in the SCR exhaust aftertreatment system of Volvo FH/FM and Mack MP7/MP8 engines, typically in the outlet position after the SCR catalyst.

Q3: What are common failure symptoms?
A3: Engine warning light, SCR system fault codes, incorrect NOx readings, or reduced engine performance.

Q4: Is this used on both Volvo and Mack trucks?
A4: Yes, it is used across compatible SCR-equipped Volvo and Mack diesel platforms depending on emission system configuration.

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