- High-Quality Construction: The 87-17009A5 boat ignition switch is crafted from durable polyester and premium brass, ensuring exceptional corrosion resistance, wear resistance, and electrical conductivity. The non-conductive housing design minimizes the risk of short circuits, enhancing safety and prolonging the product's lifespan. - Part Compatibility: This ignition switch is a direct replacement for OE part numbers 87-17009A5, MP41070-2, MP41070-1, and MP41070. It is engineered to fit most Mercury outboard motor control boxes. Please verify that your ignition switch part number matches before purchasing to ensure compatibility. - Versatile Use: The MP41070-2 ignition key switch works seamlessly with Mercury Mariner Outboard DFI, EFI, and MPI remote control boxes. If you experience difficulty turning the key or your boat fails to start, it’s time to consider a replacement for reliable engine starting. - Efficient Functionality: Featuring six wires for push blocking and three positions (OFF-RUN-START), this ignition key switch includes a push-back function. It pairs effectively with magnetic-controlled ignition systems, providing excellent protection against corrosion and oxidation. - Practical Applications: Ideal for boat owners looking to upgrade or replace their ignition system, this switch is perfect for ensuring smooth operation during fishing trips, leisurely cruises, or competitive racing. It is designed to withstand the marine environment, making it essential for any boater prioritizing performance and reliability. - Key Features: - Material: High-performance polyester and brass - Dimensions: Standard fit for most control boxes - Six-wire configuration for enhanced functionality This ignition switch delivers reliable performance and peace of mind for all your boating adventures.