Showing 1–21 of 43 resultsSorted by popularity

Attwood Gear Lube Pump
In Stock
GROCO 4 Port Oil Change System w/Reversing Switch - 24V
Out of Stock
GROCO 4 Port Oil Change System w/Reversing Switch - 12V
Out of Stock
GROCO 6 Port Oil Change System w/Reversing Switch - 24V
Out of Stock
GROCO 6 Port Oil Change System w/Reversing Switch - 12V
Out of Stock
GROCO 3 Port Oil Change System w/Reversing Switch - 24V
Out of Stock
GROCO 3 Port Oil Change System w/Reversing Switch - 12V
Out of Stock
GROCO Reversing Gear Pump 3/4" NPT Ports - 12V
Out of Stock
GROCO Gear Pump 3/4" NPT Ports - 12V
Out of Stock

GROCO Gear Pump 3/4" NPT Ports - 12V

Out of stock
$600.00
GROCO Commercial Duty Reversing Vane Pump - 24V
Out of Stock
GROCO Commercial Duty Reversing Vane Pump - 12V
Out of Stock
GROCO Commercial Duty Vane Pump - 24V
Out of Stock

GROCO Commercial Duty Vane Pump - 24V

Out of stock
$1,553.00
GROCO Commercial Duty Vane Pump - 12V
Out of Stock

GROCO Commercial Duty Vane Pump - 12V

Out of stock
$1,543.00
GROCO Heavy Duty Positive Displacement Reversing Vane Pump - 24V
Out of Stock
GROCO Heavy Duty Positive Displacement Reversing Vane Pump - 12V
Out of Stock

Frequently Asked Question

What is a transfer pump used for on a boat?

Transfer pumps help move liquids like freshwater, seawater, diesel, oil, and gray/black water. They are essential for oil changes, galley supply, bilge functions, tank transfers, and ballast systems.

Which pump voltage should I choose, 12V or 24V?

Most small and mid-sized boats use 12V pumps. Larger vessels with higher power systems may prefer 24V for better efficiency. Always match the pump to your boat’s electrical system.

Can I use the same pump for oil and water?

No. Oil change systems, like Jabsco and Shurflo kits, are designed specifically for oil. Water transfer pumps are built for freshwater or seawater. Using one pump for both can cause contamination or pump damage.

What flow rate do I need?

It depends on the application.
Galley pumps: 1–3 GPM
Oil change pumps: 1–5 GPM
Ballast pumps: 800–1100 GPH
Utility pumps: 3–6 GPM
If you’re unsure, choose a model recommended for your specific task.

Are the pumps easy to install?

Yes. Most inline and submersible transfer pumps require basic wiring and hose connections. Oil changer systems come with dedicated fittings and instructions for quick setup.