Johnson 42123 1250 GPH Cartridge Bilge Pump 12V 
Non-automatic submersible pump with 1 1/8 in. discharge outlet is activated by an external float switch & features an easy-to-replace twist lock motor cartridge.
Quickly and easily remove cartridge motor for cleaning or replacement without tools
 
12 volt DC operation
For use with a float switch or panel switch
1150 GPH flow rate straight
952 GPH flow rate @ 3 ft. of head
Includes straight 1 1/8 in. hose barb discharge port
Removable check valve
3 amp draw
5 amp fuse size
Efficient motor conserves energy with low amp draw
Water cooled motor for long service life
2.75 in. diameter x 4.4 in. height
Meets ISO 8849 Marine and CE standards