MP39770 Marine Ignition Switch for Boats, Replacement for Sierra Key Starter Switch, Off Run Start, Includes Rubber Cap and Brass Back Nut

["✅ Direct Replacement Design Designed as a replacement for Sierra MP39770 marine ignition switch. Features OFF-RUN-START operation for dependable engine starting and ignition control.","✅ Corrosion Resistant Construction Built with corrosion-resistant materials and a brass back-up nut to help withstand moisture, salt spray, and harsh marine environments.","✅ Protective Rubber Cap Design Features a protective rubber cap to help reduce exposure to water mist, spray, and outdoor marine conditions.","✅ Reliable Ignition Control Provides dependable ignition and starting control for compatible marine electrical systems.","✅ Suitable for Marine Applications Ideal for replacing worn, damaged, or corroded ignition switches on boats and marine equipment."]