Johnson Pump HD Bilge Pump 2200 GPH w/EM Switch 12V. These pumps has a liquid cooled 12-pole motor with double ball bearings for extended service life. The 2200 GPH motor is sealed off by a mechanical seal design while the 1600 GPH model has lipseal. The impeller is carefully designed and tested to maximize head and flow. The 4000 GPH features a robust motor design mechanical shaft seal high impact ABS plastic and unique threaded port design. Universal base plate and choice of two different ports makes for a simple installation. Removable check valve included. Features of Johnson Pump HD Bilge Pump 2200 GPH w/EM Switch 12V: 12V Heavy Duty Bilge Pump 2200 GPH 12V with stainless steel shaft tough thermoplastic bodies Liquid cooled 12-pole motor with double ball bearings Electromagnetic switch and removable check valve included 1.125in & 1.25in ports Included Accessories: HD Bilge Pump 2200 GPH;Switch Documentation Package Contents: Johnson Pump HD Bilge Pump 2200 GPH w/EM Switch 12V Johnson Pump 02204-00: HD Bilge Pump 2200 GPH w/EM Switch 12V