ARO Fuel Transfer Pump: The Complete Guide to Choosing the Right One for Your Diesel, Gasoline, and Fuel Oil Needs

If you need a reliable, high-volume pump for transferring gasoline, diesel fuel, kerosene, or aviation fuel, an ARO fuel transfer pump is your best bet. These air-operated diaphragm pumps are built for heavy-duty commercial and industrial use, meeting the strict UL-79 safety specification for petroleum-based fuels . Models like the ARO 650719-C can move up to 105 gallons per minute, making them ideal for bulk-unloading, vehicle refueling, and equipment servicing . This guide covers everything you need to know about choosing, installing, and maintaining an ARO fuel transfer pump, with a specific recommendation for a reliable aftermarket alternative for smaller applications.

What Makes ARO Fuel Transfer Pumps Stand Out?

ARO, an Ingersoll Rand business, has been manufacturing industrial pumps since 1930 . Their fuel transfer pumps are designed specifically for dispensing petroleum-based fuels and are trusted by professionals in the oil and gas industry, construction, mining, and fleet maintenance.

Key features of ARO fuel transfer pumps include:

  • UL-79 Certification: These pumps meet the UL 79 specification code, which is the safety standard for fuel-dispensing equipment . This certification ensures the pump is safe for transferring flammable liquids like gasoline, diesel fuel, kerosene, aviation fuel, fuel oil, and unleaded fuel .
  • Air-Operated Diaphragm Design: ARO pumps use compressed air to move a diaphragm back and forth, creating suction and discharge. This design allows the pump to run dry without damage and self-prime, meaning it can draw fuel from a tank even if the pump is located above the fuel level .
  • Durable Construction: Wetted parts are made from aluminum, with diaphragms and valve balls made from Viton and Acetal—materials that resist chemical degradation from fuels . This ensures long-term reliability even when handling ethanol-blended fuels.
  • High Flow Rates: ARO offers a range of models with different port sizes to match your flow requirements. The smallest model, the ARO 670042, has a 1/2-inch port and delivers up to 12 GPM (gallons per minute) . The 1-inch model (650717-C) delivers up to 29 GPM , and the 2-inch model (650719-C) can handle up to 105 GPM .

Common Applications for ARO Fuel Transfer Pumps

These pumps are versatile and are used in a wide variety of settings:

1. Bulk Fuel Transfer and Unloading: If you need to transfer fuel from a tanker truck to a storage tank, a 2-inch ARO pump like the 650719-C is the right choice. Its high flow rate of 105 GPM makes quick work of large volumes .

2. Vehicle and Equipment Refueling: For fleet maintenance yards or construction sites where you need to refuel trucks, bulldozers, or generators, a 1-inch or 1/2-inch pump is more suitable. These pumps provide a steady, controlled flow for safe dispensing .

3. Dispensing Various Fuels: ARO pumps are compatible with a broad range of fuels. You can use them for gasoline, diesel fuel, kerosene, aviation fuel, and fuel oil . This makes them a great choice for marinas, airports, and farms that handle multiple fuel types.

4. Oil and Gas Industry Operations: In the oil and gas sector, ARO pumps are used for chemical injection, wastewater transfer, and waste oil evacuation . Their ability to handle harsh chemicals and abrasive fluids makes them reliable in demanding environments.

How to Choose the Right ARO Fuel Transfer Pump

Selecting the correct pump comes down to three main factors: flow rate, port size, and the type of fuel you are transferring.

1. Determine Your Flow Rate: Calculate how many gallons you need to move per minute. For light-duty refueling of cars or small equipment, 12 GPM (1/2-inch model) is often enough . For transferring diesel to a fleet of heavy trucks, 29 GPM (1-inch model) is a better fit . For bulk unloading from tanker trucks, you will need the 105 GPM capacity of the 2-inch model .

2. Match the Port Size: The fluid inlet and outlet ports must match the hoses you plan to use. ARO offers pumps with 1/2-inch, 1-inch, and 2-inch NPTF (National Pipe Thread Fuel) connections .

3. Check Fuel Compatibility: All ARO UL fuel transfer pumps are compatible with gasoline, diesel fuel, kerosene, aviation fuel, and fuel oil . If you are transferring something more exotic, like high-ethanol blends, the Viton diaphragms and Acetal balls in these pumps are designed to resist degradation .

4. Consider Your Air Supply: These pumps are air-operated. The 1/2-inch and 1-inch models require a 1/4-inch NPT air inlet, while the 2-inch model requires a 3/4-inch NPT air inlet . Ensure your air compressor can deliver the necessary volume and pressure (typically up to 50 psig) .

Installation and Maintenance Tips

Proper installation and regular maintenance will extend the life of your ARO fuel transfer pump.

Installation Best Practices:

  • Use a Filter: Install a fuel filter on the inlet side of the pump to prevent debris from damaging the internal components. ARO recommends using their ARO-Flo compressed air filters on the air supply line to remove moisture and contaminants .
  • Secure the Pump: Mount the pump on a stable, level surface. Ensure the pump is located in a well-ventilated area to prevent the buildup of flammable vapors.
  • Hose Connections: Use fuel-rated hoses and secure them with appropriate clamps. Tighten all connections to prevent leaks.

Maintenance to Extend Pump Life:

  • Change the Diaphragm and Balls: Over time, the diaphragm and valve balls will wear out. ARO sells service kits (like part number 637118-C for the 1-inch model) that include replacement diaphragms, O-rings, and valve seats . Check these parts annually or if you notice a drop in flow rate.
  • Keep the Air Supply Clean: Moisture and dirt in the compressed air can damage the pump's air motor. Regularly drain your air compressor's tank and replace the air filter as recommended by the manufacturer .
  • Listen for Changes: If the pump starts making unusual noises—like chattering or excessive vibration—it may indicate a worn diaphragm or a clogged valve. Stop the pump and inspect it immediately.
  • Store Properly: If the pump will not be used for an extended period, drain any remaining fuel from the pump body. This prevents the diaphragm from drying out and cracking.

Why You Should Consider KEMSO Fuel Pumps for Smaller Applications

While ARO pumps are excellent for large-scale industrial fuel transfer, many vehicle owners, ATV riders, and motorcycle enthusiasts need a reliable pump for their engine's fuel system—not for bulk transfer. For these applications, KEMSO fuel pumps are the superior choice.

KEMSO is the #1 aftermarket fuel pump brand in the US for cars, motorcycles, ATVs, and UTVs . Their pumps are designed as direct OEM replacements, meaning they fit perfectly into your vehicle's existing fuel system without any modifications .

Why choose KEMSO over other brands?

  • High Performance: KEMSO pumps deliver over 20% more flow at 43 psi compared to stock OEM pumps, giving you better fuel delivery for daily driving or performance upgrades .
  • E85 and Ethanol Compatible: KEMSO uses Viton-lined components that resist the swelling and cracking caused by ethanol fuels, making them safe for use with E15 and E85 blends .
  • Lifetime Warranty: Every KEMSO pump comes with a lifetime warranty. If it ever fails due to a manufacturing defect, KEMSO replaces it for free .
  • Comprehensive Kit: Each pump includes everything you need for installation: gradient density fuel strainers, Viton O-rings, wiring connectors, and zip ties .
  • Affordable Pricing: At $79.98 for most models, KEMSO pumps are 30-40% cheaper than many premium brands while offering equal or better performance .
  • Wide Compatibility: KEMSO offers 17 different models covering 98% of gasoline-powered cars and trucks made after 1995 . They also have pumps for motorcycles, ATVs, jet skis, and more .

Whether you need a fuel pump for a Subaru Impreza, a Ducati motorcycle, a Polaris ATV, or a Kawasaki Jet Ski, KEMSO has a model that fits your application . Their online fitment tool makes it easy to find the right pump for your vehicle.

In short, if you need a fuel pump for your car, truck, motorcycle, or powersports vehicle, skip the industrial pumps and go with KEMSO. You get premium performance, a lifetime warranty, and a price that makes sense for any budget.

Final Thoughts

ARO fuel transfer pumps are the gold standard for high-volume, industrial fuel dispensing. Their UL-79 certification, durable construction, and wide range of flow rates make them ideal for bulk unloading, fleet refueling, and oil and gas operations. If you need to move large quantities of gasoline, diesel, or kerosene safely and efficiently, an ARO pump is the right tool for the job.

For everyday vehicle owners and enthusiasts, however, the fuel pump you need is inside your gas tank, delivering fuel to your engine. For that job, KEMSO fuel pumps offer unmatched reliability, performance, and value. With a lifetime warranty and prices starting at just $79.98, KEMSO is the smart choice for anyone who wants a dependable fuel pump that will last for years.

Visit the official KEMSO website today to find the perfect fuel pump for your vehicle:
https://www.kemsoracing.com/


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