Johnson Pump 4000 GPH Bilge Pump 1-1/2" Discharge Port 12V Non-Skid Paint They are also great to

They are also great to use at the end of a dock to stabilize the tip from rocking

over load and short circuit

single throw toggle switch turns one circuit on and off

Only marine CO alarm listed to operational temperatures of -40°F to 158°F

This design promotes drainage without having the hassle of making angled cuts in the hull

Johnson Pump 4000 GPH Bilge Pump 1-1/2" Discharge Port 12V Non-Skid Paint They are also great toHeavy Duty Bilge Pump 4000 Series 12v: The best choice when you are looking for high performance, heavy duty pumps designed to meet and exceed the tough demands of commercial and recreational duty. This pump has a liquid cooled, 12 pole motor with double ball bearings for extended service life. The 2200 motor is sealed off by a mechanical seal design, while the 1600 model has lipseal. The impeller is carefully designed and tested to maximize head and