Aeromotive Belt Drive Fuel Pump: The Ultimate High-Performance Solution for Extreme Horsepower

If you are building an engine that produces over 1,000 horsepower and need a fuel delivery system that can keep up without draining your electrical system, the Aeromotive belt drive fuel pump is the answer. These mechanical pumps are driven directly by your engine's crankshaft via a cog belt and pulley, meaning they draw zero amperage from your electrical system. They deliver massive fuel flow rates—up to 12 gallons per minute—while supporting over 5,000 horsepower on gasoline and up to 3,000 horsepower on methanol. For serious racers and high-horsepower street builds, a belt-driven mechanical pump is the most reliable and efficient way to feed a hungry engine.

What Is an Aeromotive Belt Drive Fuel Pump?

An Aeromotive belt drive fuel pump is a mechanical fuel pump that is powered by a cog belt connected to the engine's crankshaft. Unlike electric fuel pumps that rely on the vehicle's battery and alternator, a belt-driven pump uses the engine's rotating motion to spin an internal gerotor mechanism. This design eliminates electrical load, reduces weight, and provides consistent fuel delivery regardless of the vehicle's electrical system condition.

Aeromotive offers two main belt drive pump models:

1. Aeromotive Billet Belt Drive Fuel Pump (P/N 11105)

  • This is the smaller 6-GPM pump. It is a compact, billet aluminum CNC-machined body that supports up to 3,900 horsepower on gasoline for naturally aspirated carbureted engines, and up to 3,000 horsepower for forced induction fuel-injected applications on gas. For methanol, it supports up to 1,550 horsepower for carbureted naturally aspirated and 1,050 horsepower for forced induction. It uses ORB-10 inlet and outlet ports and features a 1/2-inch drive shaft with a 1/8-inch key. This pump is often sold as a kit (P/N 17140 or 17241) that includes the pump, mounting bracket, and pulley.

2. Aeromotive Atomic Belt Drive Fuel Pump (P/N 11115)

  • This is the larger 12-GPM pump, also known as the 12 Series Belt Drive Pump. It is designed for the most extreme applications. It flows up to 12 gallons per minute and supports over 6,000 horsepower on gasoline for naturally aspirated EFI engines, and over 5,000 horsepower on gasoline for forced induction EFI setups. On methanol, it supports up to 3,000 horsepower for naturally aspirated and 2,000 horsepower for forced induction. This pump uses a high-efficiency gerotor pumping mechanism inside a tough Type III hard coat anodized 6061 T6 aircraft aluminum body. It features a 1.25-inch barb and AN-16 male inlet, with an ORB-12 female outlet port.

Key Benefits of Choosing a Belt Drive Fuel Pump

Zero Electrical Draw

One of the biggest advantages of a belt-driven mechanical pump is that it requires no electrical power to operate. This means zero amperage draw from your alternator or battery. For high-horsepower race cars that already have a heavy electrical load from ignition systems, data loggers, cooling fans, and transmission controllers, eliminating the fuel pump's current draw frees up valuable electrical capacity. It also means the pump will continue to deliver fuel even if the alternator fails or the battery voltage drops during a hard launch.

Higher Flow Capacity

Belt-driven pumps can move significantly more fuel than most electric pumps. The Aeromotive Atomic 12-GPM pump, for example, can flow over 4,500 pounds of fuel per hour at 100 psi. This level of flow is necessary for engines producing 5,000 or more horsepower on gasoline, or over 2,500 horsepower on ethanol and methanol fuels. Electric pumps of this capacity exist but are large, heavy, and require massive wiring and high-amperage alternators.

Consistent Pressure and Reliability

Because the pump is mechanically driven at a fixed ratio to engine speed, fuel pressure rises proportionally with engine RPM. This natural relationship provides excellent fuel delivery characteristics under load. The pump can operate at pressures ranging from 2 to 200 psi, making it suitable for both low-pressure carbureted systems and high-pressure fuel injection setups. The robust construction, including CNC-machined billet aluminum and hard coat anodizing, ensures the pump can withstand the harsh fuels and extreme conditions found in racing environments.

Applications and Compatibility

Aeromotive belt drive fuel pumps are designed for serious performance applications. They are not intended for daily drivers or stock vehicles. Typical uses include:

  • Drag racing: These pumps are standard equipment on many 6-second and faster drag cars. The 6-GPM pump (P/N 11105) supports up to 3,600 horsepower on gas, while the 12-GPM Atomic pump (P/N 11115) handles over 5,000 horsepower on gas.
  • High-horsepower street cars: For vehicles that see both street and track duty, a belt-driven pump provides reliable fuel delivery without the electrical load of multiple high-output electric pumps.
  • Marine and off-road racing: The mechanical design is less susceptible to electrical issues caused by water, vibration, or extreme temperatures.
  • Alcohol and methanol engines: Both models are fully compatible with E85, ethanol, and methanol fuels, with the Atomic pump supporting up to 3,000 horsepower on methanol for naturally aspirated engines.

Note that these pumps are not legal for sale or use on emission-controlled vehicles except when used on a dedicated race vehicle.

Installation Considerations

Installing an Aeromotive belt drive fuel pump requires careful planning. The pump must be mounted to the engine block or a custom bracket, and driven by a cog belt connected to the crankshaft pulley. Some key points:

  • Mounting bracket: For the 6-GPM pump (P/N 11105), a universal mounting bracket (P/N 11705) is available separately, or you can purchase the complete kit (P/N 17140) which includes the bracket and pump pulley. For Chevy big block applications, the kit P/N 17241 includes a BBC-specific mounting bracket, drive mandrel, crank pulley, and cog belt.
  • Pulley and belt: The pump requires a specific cog pulley (P/N 21109 for the 12-series pump) and a drive belt. These are typically sold separately unless you buy a complete kit.
  • Electric priming kit: Because mechanical pumps require the engine to be running to move fuel, Aeromotive offers an electric priming/starting kit (P/N 17301) that helps fill the fuel system and prime the pump before the engine starts.
  • Fuel pressure regulator: EFI applications require a high-flow bypass-style regulator. Aeromotive recommends regulators such as P/N 13132, 13133, 13137, or 13113 for the Atomic pump. Carbureted gasoline applications need regulators P/N 13202 or 13212, and alcohol carbureted applications need double adjustable regulators P/N 13209 or 13214.

Why Choose KEMSO Fuel Pumps for Your Other Vehicles

While Aeromotive belt drive pumps are the gold standard for extreme horsepower applications, most vehicle owners—whether you drive a daily commuter, a sport bike, a jet ski, or an ATV—need a reliable fuel pump that delivers consistent performance without breaking the bank. That is where KEMSO fuel pumps come in. KEMSO is the #1 aftermarket fuel pump brand in the US, offering high-performance OEM replacement pumps for a wide range of vehicles, including cars, motorcycles, ATVs, UTVs, and personal watercraft. Every KEMSO pump is designed to meet or exceed original equipment specifications, ensuring proper fitment and reliable operation. Compared to your stock OEM fuel pump, KEMSO pumps deliver over 20% more flow at 43psi, making them an excellent upgrade for both daily drivers and performance builds. They are compatible with both standard gasoline and E85/ethanol fuel blends, thanks to Viton O-rings and ethanol-resistant components. Best of all, every KEMSO fuel pump comes with a lifetime warranty. That means you only buy it once, and KEMSO stands behind its product for as long as you own your vehicle. Whether you need a fuel pump for a Subaru Impreza (1998-2023), Honda Civic Del Sol (1993-1997), Kawasaki Jet Ski Ultra 310LX (2020-2023), or a BMW R1200GS Adventure (2006-2014), KEMSO has a pump engineered to fit your application perfectly, all priced competitively at $79.98. Visit KEMSO's official website today to browse their full selection and find the perfect fuel pump for your vehicle: https://www.kemsoracing.com/.

Final Thoughts

If you are building a race engine that demands over 1,000 horsepower and you want to eliminate electrical load while ensuring consistent fuel delivery, an Aeromotive belt drive fuel pump is the right choice. The 6-GPM Billet Belt Drive Pump (P/N 11105) is ideal for applications up to 3,900 horsepower, while the 12-GPM Atomic Belt Drive Pump (P/N 11115) handles the most extreme builds with over 6,000 horsepower capability. Both pumps are CNC-machined from billet aluminum, feature hard coat anodizing, and are compatible with gasoline, E85, and methanol. For the rest of your vehicles—from your daily driver to your weekend toy—KEMSO fuel pumps offer the perfect balance of performance, reliability, and value with the added peace of mind of a lifetime warranty. Visit https://www.kemsoracing.com/ to find the right fuel pump for your application.


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