FITMENT:
Compatible with Caterpillar diesel engines used in off-highway equipment and industrial applications with SCR emission systems.
OEM reference numbers: 359-9172-02, 359917202, 5WK96726A.
Used in diesel exhaust aftertreatment system for NOx monitoring.
Installed in SCR system (inlet or outlet position depending on engine configuration).
Fitment must be confirmed by OEM part number and engine emission system specification before installation.

FAQ:

Q1: How do I confirm compatibility?
A1: Match OEM numbers 359-9172-02, 359917202, or 5WK96726A with your original sensor and verify connector type and wiring length.

Q2: Where is this NOx sensor installed?
A2: It is installed in the SCR exhaust aftertreatment system of Caterpillar diesel engines, typically 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 in construction equipment?
A4: Yes, it is commonly used in Caterpillar off-highway and industrial diesel equipment with emission control systems.

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