This is a genuine Mercury Marine Quicksilver factory OEM part, not aftermarket
Superseded: 8167482 / 8167483 / 8167484 / 8567542
The part is catalogued under Mercury (also via Quicksilver) marine components.
It is listed as "Cable‑Interlock" or "Cable, Interlock
It is used as a part of the starter/engine manual‑start assembly ("Manual Start Components") on the specified 2‑cylinder motors.
Because of its role, it functions to link or interlock the starter handle or starter mechanism with the engine's start system (i.e., enabling or controlling engine start via cable).