Johnson Pump - Flexible Impeller Dc Driven Pump - Bronze Body - 102476003. With their high level of flexibility, these pumps are ideally suited for use in boats as bilge and deckwash pumps, fresh water pumps or refuelling pumps for oil and diesel. These pumps may be combined with a vacuum switch for automatic operation. Heavy duty to provide long service life even under heavy use.. Features:. Size - 6.7"L x 4.4"W x 4.5"H. Bronze body. GPM - 5.5. Ports - 3/8" NPT. Volts - 12