FITMENT:
Compatible with Detroit Diesel engines and Mercedes-Benz diesel vehicles equipped with SCR emission systems (12V platforms).
OEM reference numbers: 5WK96656, A0081531128.
Upstream NOx sensor used in diesel exhaust aftertreatment system for NOx monitoring (AdBlue/DEF SCR system).
Installed before catalytic converter (upstream position) in exhaust system.
Fitment must be confirmed by OEM part number and emission system configuration before installation.

FAQ:

Q1: How do I confirm compatibility?
A1: Match OEM numbers 5WK96656 or A0081531128 with your original sensor and verify connector type, voltage (12V), and wiring length.

Q2: Where is this NOx sensor installed?
A2: It is installed in the upstream position of the SCR exhaust system, before the catalytic converter.

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 for both Detroit Diesel and Mercedes-Benz applications?
A4: Yes, it is used in compatible SCR-equipped diesel systems depending on engine configuration.

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