Johnson Pump Low Boy Bilge Pump - 750 GPH - 12V

The Johnson Pump Low Boy Bilge Pump – 750 GPH – 12V (Model 33703) is purpose-built for marine and automotive applications where water removal efficiency meets space constraints. Mechanics and boat owners rely on this pump for rapid bilge evacuation in inboard engine compartments and tight installation spaces where traditional full-size pumps simply won't fit. The low-profile design eliminates the frustration of wrestling oversized equipment into cramped engine bays, making it the go-to choice for custom marine retrofits and emergency water management systems.

This centrifugal pump delivers 750 gallons per hour displacement at 12-volt DC operation, making it effective for mid-sized vessels and auxiliary systems requiring consistent, reliable water evacuation. The removable cartridge-style design allows for straightforward maintenance and field serviceability without complete pump disassembly—a critical advantage when uptime matters. Its compact footprint (6 x 10 inches) and lightweight construction (0.95 lbs) minimize mounting complications and reduce parasitic electrical load on marine electrical systems, while the direct 12V input integrates seamlessly with standard automotive and marine battery configurations.

Engine builders and marine technicians benefit most from this pump's space-saving geometry when installing bilge systems in vehicles with limited engine compartment clearance or in aftermarket marine conversions. It excels in auxiliary drainage applications, automatic bilge systems, and emergency dewatering setups aboard center-console fishing boats and cabin cruisers. Installation compatibility extends to any 12V DC circuit with appropriate fusing, and the cartridge construction ensures parts availability and rebuild options for long-term reliability.