Jabsco Par-Max HD5 12V 5-GPM 40-PSI Water Pump

The Jabsco Par-Max HD5 12V 5-GPM 40-PSI Water Pump supplies pressurized fresh water to compatible onboard faucets, showers, and other fixtures. Its multi-chamber diaphragm design responds automatically to water demand, providing a practical pressure source for marine freshwater systems.

Par-Max models are built to balance useful flow with pressure control across varying fixture demand. Heavy-duty versions use upgraded motor and housing construction for improved durability, while compact standard models provide a smaller footprint for systems with fewer outlets.

Confirm voltage, circuit protection, tank outlet, inlet filtration, hose size, pressure compatibility, fixture demand, mounting position, and service access before installation. Sanitize potable-water plumbing as required, protect the pump from freezing, and test every connection for leaks under normal operating pressure. We carry more in our bilge and water pumps.

• The pump responds as faucets and showers open or close.
• The diaphragm design maintains useful delivery across normal fixture use.
• Compact construction supports practical onboard installation.
• Accessible plumbing and pump placement make routine inspection easier.