TRAC 69321 Submersible Thru-Hull Pump 8001100 GPH The TRAC 69321 Submersible Thru-Hull Pump is a self-priming, 12V centrifugal pump thats ideal for all watercraft. Designed for easy installation and retrofitting, this pump features a cartridge style pump head and universal strainer base. This versatile thru-hull pump comes packaged with both a 1-18 1100 GPH outlet and a 34 800 GPH outlet. Each outlet has an O-ring for easy maneuverability without stripping. The TRAC 69321 Thru-Hull Pump can run