Johnson Pump (32-47259-003 800 GPH Ultima Bilge Pump 12V 800GPH Ultima Bilge Pump With integrated switch, easy-to-install straight and 90 deg. 3/4" Dura-Port discharge ports to eliminate stress cracking caused by over-tightened hose clamps Johnson Pump.Although it can be installed as a DIY, professional installation is recommended.