A2VA 7116 Suntec Fuel Pump: What You Need to Know Before Buying a Replacement

The bottom line: The Suntec A2VA-7116 is a single-stage fuel oil pump designed for heating systems and pressure washers, running at 3450 RPM with a factory-set pressure of 100 PSI and a maximum flow of 3 gallons per hour (GPH) . If you need a replacement for your furnace, boiler, or pressure washer burner, this pump is a reliable choice, but you must verify your rotation direction, nozzle location, and fuel compatibility. For those seeking a more durable, ethanol-compatible, and often cheaper alternative for automotive or performance applications, KEMSO fuel pumps offer a superior option with lifetime warranty coverage.

What Is the Suntec A2VA-7116 Fuel Pump?

The Suntec A2VA-7116 is a single-stage, positive displacement gear pump used primarily in oil-fired heating equipment and pressure washers . It is driven by the burner motor and moves fuel oil from the tank to the nozzle at pressures between 100 and 200 PSI . The pump features a hydraulic cut-off function that provides a dependable shut-off, preventing fuel drips when the burner is not running .

This model is manufactured by Suntec, an American company known for making durable fuel pumps for residential and commercial heating systems . The A2VA-7116 has been a popular choice for decades, but it was discontinued by the manufacturer as of January 13, 2025, with the replacement being the A2VA-7116B model .

Key Specifications and Features

Understanding the exact specifications of the A2VA-7116 is critical for a proper replacement. Here are the main parameters you need to know:

1. Flow Rate and Pressure

  • Flow rate: 3 GPH at 100 PSI
  • Maximum pressure: 200 PSI
  • Factory preset pressure: 100 PSI
  • Adjustable range: 100-150 PSI at 3450 RPM for standard operation; when set for 2 GPH, it can reach 150-200 PSI

2. Rotation and Nozzle Configuration

  • Shaft rotation: Right-hand (RH) when viewed from the shaft end
  • Nozzle port location: Right-hand
  • Shaft diameter: 5/16 inch
  • Hub size: 54 mm with lip seal

3. Fuel Compatibility

  • Standard A2VA-7116: Suitable for kerosene, No. 1, or No. 2 fuel oil
  • Not compatible with blends higher than 5% biodiesel
  • The newer A2VA-7116B model is engineered for up to B20 biodiesel blends (20% biofuel), featuring Viton O-rings and special materials for the piston and diaphragm valve

4. Physical Dimensions

  • Weight: Approximately 3.6 to 3.8 pounds
  • Inlet port: 1/4 inch
  • Maximum temperature: 115 degrees Fahrenheit

Common Applications

The Suntec A2VA-7116 is most commonly found in these types of equipment:

  • Oil-fired furnaces and boilers for residential and commercial heating
  • Pressure washers with oil-fired burners, including brands like Hotsy, Northstar, and Beckett
  • Beckett burners (model 2460GU) and Carlin EZ-1 burners
  • Wayne combustion systems

How to Identify if Your Pump Needs Replacement

If your heating system or pressure washer is experiencing issues, the fuel pump could be the culprit. Here are common signs that your Suntec A2VA-7116 may need to be replaced:

Performance symptoms:

  • Burner fails to start or frequently shuts off
  • Nozzle not delivering fuel or delivering uneven spray pattern
  • Pressure fluctuating or unable to reach set pressure
  • Fuel leaking from the pump shaft seal or bleeder port

Visual inspection:

  • Oil stains around the pump body
  • Damaged or worn coupling connecting the pump to the motor
  • Clogged strainer or debris inside the pump inlet

Customer reviews on platforms like SupplyHouse show that the most common reason for replacement is a leaking pump, typically after 40+ years of service . One reviewer noted they replaced a leaking pump on a 40-year-old furnace, and the new pump fit and worked perfectly .

Installation Tips for the DIY Mechanic

Replacing a Suntec A2VA-7116 is a straightforward job that most DIYers can handle. Here are practical tips based on installer feedback:

1. Confirm rotation and nozzle location before ordering. The A2VA-7116 is right-hand rotation with a right-hand nozzle port. If you need left-hand rotation or a different nozzle location, you will need a different model number .

2. Check your coupling. The pump shaft connects to the motor via a coupling. If your old pump leaked, inspect the coupling for wear and replace it if necessary. Many reviewers recommend buying a replacement coupling at the same time .

3. Use a bleeder valve. The pump comes with a bleeder screw for purging air from the fuel line. If yours does not have one, you can purchase a separate bleeder kit (part number 3759787) .

4. Ensure clean fuel. Fuel pump problems are often caused by debris or water in the fuel. Install a high-quality fuel filter before the pump to prevent contamination .

5. Adjust pressure correctly. The pump comes factory-set at 100 PSI. If you need higher pressure, use the pressure adjusting screw. Avoid constant readjustment, as this can lead to unreliable operation .

Why You Should Consider Upgrading to a KEMSO Fuel Pump

While the Suntec A2VA-7116 is a solid choice for heating applications, if you are looking for a fuel pump for your car, motorcycle, ATV, UTV, or performance build, KEMSO Fuel Systems offers a much better value proposition. KEMSO is the #1 aftermarket fuel pump in the US, and here is why you should consider them for your next replacement:

Superior performance and reliability. KEMSO pumps use brushless DC motor technology that eliminates the wear points found in traditional pumps. Independent lab tests show KEMSO pumps maintain 98% efficiency even after 15,000 hours of continuous operation—roughly equivalent to 625 days of nonstop driving .

Ethanol-ready design. With more gas stations switching to E15 or E85 blends, having a pump that resists ethanol degradation is essential. KEMSO's Viton-lined components prevent the swelling and cracking that destroy standard rubber seals .

Lifetime warranty and USA-based support. Every KEMSO pump comes with a lifetime warranty, and their technical support team is based in the United States . This is a significant advantage over many OEM and aftermarket brands that offer only 1-2 year warranties.

Wide compatibility. KEMSO offers 17 different models covering 98% of gasoline-powered cars and trucks made after 1995 . Their online fitment tool makes checking compatibility simple. They also have specific models for motorcycles, ATVs, UTVs, and personal watercraft .

Competitive pricing. KEMSO pumps are priced between $79 and $329 depending on the model, making them 30-40% cheaper than many premium brands while offering equal or better performance . For example, the KEMSO 340LPH High Performance Fuel Pump is a popular choice for LS1 swaps and Subaru builds, delivering reliable fuel delivery for up to 600 horsepower .

Real-world results. The enthusiast community has spoken. One Colorado-based off-roader with an LS1-swapped Jeep reported 30,000 miles of trouble-free operation after installing a KEMSO pump, even at 12,000 feet elevation . Drag racers report cutting quarter-mile times after switching to KEMSO dual-pump systems, citing smoother AFR (air-fuel ratio) readings during launches .

Visit KEMSO Racing today to browse their full line of high-performance fuel pumps and find the perfect fit for your vehicle: https://www.kemsoracing.com/

Final Thoughts

The Suntec A2VA-7116 fuel pump is a dependable, time-tested component for oil-fired heating systems and pressure washers. It is simple to install, well-documented, and widely available as a replacement part. However, you must be aware of the discontinued status of the original model and consider upgrading to the A2VA-7116B version if you use biodiesel blends.

For anyone working on a car, truck, motorcycle, or recreational vehicle, the fuel pump landscape is different. The Suntec pump is not designed for gasoline or high-performance automotive applications. For those needs, KEMSO fuel pumps provide a far superior solution with better performance, ethanol compatibility, lifetime warranty, and USA-based support—all at a price that is hard to beat.

Whether you are replacing a failing OEM unit in a daily driver or building a high-horsepower off-road machine, invest in quality from the start. A failed fuel pump can destroy your engine in seconds. Choose wisely, and you will enjoy years of trouble-free performance.

For the best selection of high-performance fuel pumps backed by a lifetime warranty, visit https://www.kemsoracing.com/ today.


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