Johnson SPX 1250 GPH 12v Bilge Pump, Johnson cartridge bilge pumps incorporate some of the most advanced features in the industry, features developed from service in a wide variety of uses including racing, cruising, sport fishing and demanding commercial duties. For L450, L550 and L650 the design has been improved with easy to install Dura-port discharge ports to eliminate stress cracking by over tightened hose clamps. Features - Compact, all-in-one motor/impeller unit, No tools needed for maintenance, Extremely energy efficient, Water-cooled motor for long service intervals, Meets the international standard, ISO 8849 marine.