Fill-Rite 12V 20 GPM Fuel Transfer Pump FR4204H (Pump-Only) — Cast Iron, Rotary Vane

The Fill-Rite FR4204H is a 12V, 20 GPM rotary-vane fuel transfer pump (pump only) built in cast iron for long-term, reliable fuel moving of gasoline, diesel, kerosene and approved blends.

Compact and heavy-duty, the FR4204H is engineered for mobile fueling tasks where a robust, long-lasting pump is needed. This pump ships as a pump-only kit but includes a 1" street elbow, a 5' 12AWG ground lead, two wire nuts and PTFE tape so you can complete a basic installation quickly. Designed for truck- or trailer-mounted fuel tanks, the unit runs on 12V battery power and uses Rotary Vane Technology to preserve steady flow rates as parts age.

How does this pump handle different fuels and blends?

The FR4204H is compatible with a wide range of common transport fuels: gasoline, diesel and kerosene as well as ethanol and methanol blends up to 15%, and biodiesel up to B20. Its materials and design accommodate these fuels without special conversions, while thermal overload protection helps guard the motor against abnormal conditions.

• Compatible with gasoline, diesel, kerosene
• Supports ethanol/methanol blends up to 15%
• Accepts biodiesel blends up to B20
• Thermal overload protection reduces risk of motor overheating

What performance can I expect for flow and lift?

The FR4204H delivers up to 20 gallons per minute and is intended for battery-powered, bung-mounted transfer. It will draw from typical tank depths and push fuel to moderate discharge heights, making it well suited for refueling rigs, fleet trucks, and mobile tanks.

• Maximum flow rate: 20 GPM
• Intake suction: effective from tank depths around 8 ft
• Discharge capability: lifts fuel up to approximately 37 ft
• Rotary Vane Technology maintains steady flow over time

What features make installation and maintenance easier?

The pump is built with practical installation features for tight spaces and mobile applications. A rotatable junction box, included fittings, and field-serviceable components reduce installation time and simplify wiring, while the cast-iron body stands up to demanding environments.

• Junction box rotates 180° for easier wiring in tight areas
• Includes 1" street elbow, 5' ground wire and PTFE tape
• Durable cast-iron housing for rugged use
• Thermal overload and proven motor design for protection and longevity

Is this a complete kit or a pump-only model?

This listing is the pump-only FR4204H model: core pump plus a small set of installation accessories are included, but it does not come with hoses, nozzle, or in-line filters. It’s intended for buyers who need a heavy-duty pump to install into an existing or custom fuel transfer setup.

• Included: pump, 1" street elbow, 5' 12AWG ground wire, two wire nuts, PTFE tape
• Not included: hoses, filter assemblies, nozzle, mounting bracket (if required)
• Designed for use with standard bung mounts and 12V battery power

Who is this for? The Fill-Rite FR4204H is aimed at fleet managers, contractors, farmers, and anyone needing a dependable, high-capacity 12V transfer pump for mobile fuel delivery or refueling stations. It’s best suited for users who already have or plan to install hoses and filters and want a rugged, serviceable pump built to handle mixed common fuel types and frequent use.