Fill-Rite 12V 20 GPM Fuel Transfer Pump — Rotary-Vane, Cast-Iron (Pump Only)

The Fill-Rite FR4204H is a 12V, 20 GPM rotary-vane fuel transfer pump (pump-only) engineered for reliable, heavy-duty transfer of gasoline, diesel, kerosene, ethanol/methanol blends up to 15%, and biodiesel up to B20.

Compact yet rugged, this pump ships as a “pump only” unit with a 1" street elbow, 5' 12GA ground wire, two wire nuts, and a roll of PTFE tape to help you get started. Built around rotary-vane technology and a cast-iron housing, the FR4204H is designed to hold steady flow rates under load, to resist wear in demanding environments, and to be installed on trailers, trucks, or stationary tanks using a bung mount.

How much fuel can the FR4204H move and what power does it need?

This model delivers up to 20 gallons per minute on a 12-volt DC supply, making it well suited for rapid transfer from large tanks. It will draw fuel from tank depths up to 8 feet and can lift fuel vertically to about 37 feet, depending on hose size and fittings.

• Flow rate: up to 20 GPM at nominal operating conditions
• Voltage: 12V DC operation for battery-powered systems
• Suction lift: up to approximately 8 ft
• Discharge head: up to approximately 37 ft (static)

What fuels can I safely pump with this unit?

The FR4204H accepts a wide range of common fuels used in transportation and equipment fueling. It supports gasoline, diesel, and kerosene plus ethanol and methanol blends up to 15% and biodiesel blends up to B20 — consult local codes and vehicle/manufacturer guidance for specific blend approvals.

• Gasoline, diesel, kerosene: compatible
• Ethanol/methanol blends: up to 15% alcohol content
• Biodiesel: compatible up to B20
• Avoid fuels or additives not listed by Fill-Rite to prevent damage

How does the FR4204H handle installation and electrical connections?

Installation is straightforward for technicians and DIY users; the junction box rotates 180° to simplify wiring in tight spaces, and the kit includes a ground wire and wire nuts. The pump is bung-mount compatible for trailers and fixed tanks and includes a 1" street elbow for plumbing hookups.

• Rotating junction box for easier wiring access
• Included 5' 12GA ground wire, two wire nuts, PTFE tape, and 1" elbow
• Bung-mount design for tanks on trucks and trailers
• Electrical: ensure proper battery/ground sizing and fusing per instructions

What durability and safety features protect the pump in heavy use?

The FR4204H uses a cast-iron body and rotary-vane internals to resist wear and keep flow steady over time. It also includes thermal overload protection to guard the motor during abnormal conditions and comes from Fill-Rite with strong quality controls and a limited lifetime warranty on the 4200 series.

• Cast-iron construction for rugged operating environments
• Rotary-vane design for consistent performance as parts wear
• Thermal overload protection to reduce risk of motor overheating
• Manufactured to Fill-Rite quality standards and warranty coverage

Who is this for: The FR4204H is aimed at fleet managers, contractors, farmers, and mobile fuel operators who need a heavy-duty, battery-powered transfer pump for on-truck or trailer use. Choose this model if you require a high-flow, durable pump that accepts common fuel blends and is built for frequent service in tough conditions.