Oil, Diesel & Fuel Transfer Pumps
Fill-Rite FR152 Piston Hand Pump - 20 GPM, 8' Hose with Telescoping Suction Pipe
Moving fluids safely is a routine job on any boat, RV or piece of outdoor power equipment. Oil, diesel and fuel transfer pumps make that job cleaner and more controlled, whether you are changing engine oil, topping off a tender, moving diesel between tanks or emptying a container without tipping it. Done by hand or with a gravity-fed jug, these tasks invite spills, wasted fuel and environmental problems. A purpose-built transfer pump keeps the fluid where it belongs.
What Transfer Pumps Do
A transfer pump moves liquid from one container or system to another. Some are manual hand pumps that extract oil through a dipstick tube or move fuel with a few strokes. Others are electric or engine-driven units built into a vessel's plumbing for repeated, higher-volume transfers. Common uses include:
- Draining engine oil from inboard and outboard motors, where a conventional drain plug may be hard to reach
- Refueling personal watercraft, small outboards, generators and landscaping equipment from portable tanks
- Transferring diesel between tanks or polishing and relocating fuel on larger vessels
- Supplying fuel oil to burners in heating applications
Key Considerations When Choosing a Pump
Fluid compatibility comes first. Gasoline, diesel, kerosene, motor oil and water each place different demands on seals, hoses and housings, so confirm the pump is rated for the fluid you plan to move. Flow rate and pressure matter for permanent installations, while portability and hose length matter more for occasional jobs. Manual versus powered operation is another choice: hand pumps are simple, need no electrical source and are easy to store, while powered pumps save time on larger volumes. Finally, look for features that reduce spills, such as vented fill caps, check valves and secure hose storage.
Brands Worth Knowing
Moeller is a well-known name in marine fuel systems, best recognized for polyethylene fuel tanks and accessories. Its hand-operated offerings include a brass oil transfer pump designed to move or extract gas, oil, water and diesel, along with the patented Flo n' Go hand pump used on portable refueling systems.
Johnson Pumps has a long track record in marine pumping, with a portfolio that spans bilge, circulation, washdown and fluid transfer products. Its flexible impeller pumps are reversible, which allows water, oil or diesel to be transferred in either direction, and the brand's corrosion-resistant designs suit harsh saltwater conditions.
Webster Fuel Pumps & Valve focuses on fuel oil pumps and valves for the oil heat industry. Its B Series transfer pumps are built for pumping a range of fuel oils at steady capacities and pressures, making the brand a practical option for heavier-duty fuel oil transfer applications.
Convert-A-Ball rounds out the selection, offering a specialty option for those who want a compact, purpose-driven accessory to support towing, boating and outdoor fluid-handling needs.
Maintenance and Safe Handling
Even the best pump benefits from care. Flush marine pumps with fresh water after saltwater use to limit mineral buildup, inspect hoses for cracks or hardening, and store pumps clean and dry. Always transfer fuel in a well-ventilated area, away from ignition sources, and use approved containers. Matching the right pump to the job keeps oil changes tidy, refueling safe and your fuel system running reliably season after season.