FITMENT:
Compatible with Cummins diesel engines and select Mercedes-Benz diesel applications equipped with SCR emission systems (24V platforms).
OEM reference numbers: 5WK96766C, 4326861, 4326861RX.
Used in diesel exhaust aftertreatment system for NOx monitoring (AdBlue/DEF SCR system).
Installed in exhaust system (inlet or outlet position depending on configuration).
Fitment must be confirmed by OEM part number and emission system layout before installation.

FAQ:

Q1: How do I confirm compatibility?
A1: Match OEM numbers 5WK96766C or 4326861 with your original sensor and verify connector type, wiring length, and 24V system specification.

Q2: Where is this NOx sensor installed?
A2: It is installed in the SCR exhaust aftertreatment system of Cummins engines and some Mercedes-Benz diesel platforms, before or after the catalytic converter depending on configuration.

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

Q4: Is this used for both Cummins and Mercedes-Benz applications?
A4: Yes, it is used across compatible SCR-equipped diesel systems depending on engine integration.

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