The 2-917808-2: The 10.16 mm pitch gives generous creepage distance for higher-voltage applications without crowding the header footprint — each position sits well apart, which simplifies routing thicker power wires in the harness.
Sizing the Wire and Terminal Order
The crimp termination means each wire is field-terminated and inserted into the cavity; the polarizing key on the housing ensures the plug can only mate one way with the header, which saves rework time on the line.
Mating Half and Board Layout
Confirm the header part number for your specific circuit count before committing the BOM — the 4-position plug here pairs with a 4-position, 2-row header.