Ensure optimal marine engine performance with this high-quality Water Pump Impeller, designed as a reliable replacement for various Johnson Evinrude Outboard models and compatible OEM parts. Crafted from premium hardened copper and durable neoprene rubber, this flexible 6-blade impeller delivers efficient water pumping for engine cooling, water transfer, wash down, and bilge pumping applications in both fresh and seawater environments. Key Features: · Premium Materials: Made from hardened copper and neoprene rubber to provide excellent flexibility, durability, and long-lasting performance under demanding marine conditions. · Precise Fitment: Compatible replacement for Johnson Evinrude Outboard 2hp (1985-1990), 4hp (1976-1980) 90-degree gearcase, and 6hp (1979) engines, as well as OEM numbers 387361, 763735, 777831, 0387361, 0763735, 0777831, and replacements for Sierra 18-3090, CEF 500354, and Mallory 9-45210. · Efficient 6-Blade Design: The flexible six-blade impeller design ensures optimal water flow and engine cooling efficiency, helping to prevent overheating and maintain engine reliability. · Versatile Marine Use: Suitable for a variety of marine water pumping tasks including engine cooling, water transfer, wash down, and bilge water pumping in both fresh and saltwater environments. · Recommended Maintenance: For best performance and to avoid engine damage, replace the impeller at least once a year or sooner depending on engine usage. Always carry spare impellers on board for emergency replacements. Specifications: · Material: Copper + Neoprene · Blades: 6 · Height: Approx. 17.82mm (0.7in) · Outer Diameter: Approx. 38.27mm (1.5in) · Inner Shaft Insertion Diameter: Approx. 11.23mm (0.4in) · OEM Compatibility: 387361, 763735, 777831, 0387361, 0763735, 0777831 · Replacement for Sierra 18-3090, CEF 500354, Mallory 9-45210 Package Includes: · 1 x Water Pump Impeller This durable Water Pump Impeller is an essential component for maintaining your marine engine’s cooling system and overall performance. Its robust construction and precise compatibility ensure a hassle-free replacement, helping you keep your boat running smoothly on every trip.