Mercury Ignition Key Switch

$75.50

Genuine Mercury ignition key switch designed to provide reliable engine starting and ignition control for Mercury outboards and MerCruiser engines. Built for long-term durability in marine environments.

Compatible With:

  • Mercury Outboards
  • Mercury FourStroke Outboards
  • Mercury Optimax Outboards
  • Mercury Verado Outboards
  • Mercury Pro XS Outboards
  • Mariner Outboards
  • MerCruiser Sterndrives
  • MerCruiser Inboards
  • Mercury Side Mount Controls
  • Mercury Top Mount Controls

The Mercury Marine 805678 Ignition Key Switch is a genuine Mercury OEM electrical control component designed to provide reliable engine starting, ignition and accessory control for Mercury outboard and MerCruiser engine applications. Built for the demanding marine environment, this heavy-duty switch is designed to withstand vibration, moisture, UV exposure and regular use while delivering dependable engine operation.

The switch controls the engine’s ignition circuit and starter motor, allowing safe and convenient engine starting from the helm station. Genuine Mercury key switches are manufactured to strict OEM specifications, ensuring correct electrical operation, reliable contact performance and compatibility with Mercury wiring harnesses and control systems.

Commonly used as a replacement for worn, damaged or corroded ignition switches, the 805678 switch helps restore reliable starting performance and maintain proper operation of the vessel’s electrical system.

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