Sea-Harvester Boat Bilge Pump 350 GPH 12 V — Quiet, Submersible Bilge Drainage for Boats

The Sea-Harvester Boat Bilge Pump 350 GPH 12 V is engineered for real-world boating, delivering dependable water removal where it matters most. Its compact, fully submersible design fits tight bilge spaces while keeping hulls dry and engines safe in any conditions.

Powerful, efficient performance in a compact package

With a capacity of 350 gallons per hour at 12V, this pump moves bilge water quickly to prevent flooding and potential engine damage. It discharges through a 3/4" outlet compatible with standard hose fittings found on most boats, and a maximum lift of 3 feet ensures reliable performance even with modest vertical routing. The included 9-foot power lead and 3-foot float switch lead simplify installation in cramped bilge areas, letting you place the pump for optimal intake and discharge.

Reliability you can count on

Designed for long-term marine service, the pump is fully submersible for true flexibility in tight compartments and spaces where space is premium. It’s run-dry capable, handling routine workloads or unexpected surges without damage. A corrosion-resistant stainless steel shaft stands up to saltwater and brackish environments, extending service life. Quiet operation means you can monitor pumping activity without intrusive noise, and the unit meets RoHS, SGS, and ISO standards for safety and quality.

Smart, adaptable control for real boats

Choose automatic or manual operation to match your setup. Wired for simple on/off control, or paired with a compatible float switch for automatic activation—perfect for unattended conditions on long trips or after heavy rain. If you prefer hands-on control, the traditional switch keeps you in command at every moment of the voyage.

Who should consider this pump

Ideal for skippers of small to mid-sized boats that require reliable bilge drainage without adding bulk. Suitable for both saltwater and freshwater vessels thanks to the corrosion-resistant shaft. It’s a solid choice for boat owners prioritizing quiet operation, straightforward maintenance, and flexible installation options with automatic or manual control.

Practical installation and care tips

• Place the intake to draw from the deepest bilge water and route the discharge overboard safely.
• Ensure clean, secure connections for power and float leads, keeping them away from sharp edges and moving parts.
• Regularly inspect the intake for debris and confirm the 3/4" discharge hose remains firmly attached to prevent leaks.
• Take advantage of the run-dry capability for routine maintenance and during low-water conditions.

Why this bilge pump stands out

Unlike generic submersible pumps, the Sea-Harvester 350 GPH 12 V blends a durable stainless steel shaft with true submersible versatility and flexible control in a compact form. Its 3 ft head capacity accommodates typical bulkhead routing, while the long power and float switch leads streamline installation in confined bilge spaces. For boaters who demand reliable drainage, quiet operation, and easy maintenance, this pump delivers tangible, real-world benefits every voyage.