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FASS Diesel - Fuel Air Separation System
FASS Fuel Pumps - Fuel Air Separation Systems
Most vehicles fuel tanks are mounted at least two feet below and ten feet away from the fuel pump. This configuration creates multiple problems associated with the fuel delivery to the engine. First, the injection pump has to draw the fuel from the tank by creating a vacuum which produces fuel vapor. Second, while the vehicle is in motion the movement of the fuel inside the tank causes air to become entrained within the fuel.

By having entrained air and air vapor in the fuel, the engine does not perform at the manufacturer's specification, and the fuel injectors and fuel injection pump are not properly lubricated. Air and fuel vapor occupy the space that should have pure fuel, thus delaying the injection of fuel (retarded timing) into the combustion chamber. The air/vapor present in fuel is very inconsistent, making it virtually impossible to adapt the varying degrees of changes in injection timing.

The answer to this problem is the FASS Fuel Pumps.

Benefits of FASS Fuel Pumps:
  • FASS Fuel Systems Remove AIR / Vapor from Your Fuel
  • FASS Fuel Systems Consistent Flow of Fuel
  • FASS Fuel Systems are Reliable High Volume Pumps
  • FASS Fuel Systems Increase Horse Power
  • FASS Fuel Systems Increase Torque
  • FASS Fuel Systems Increase Fuel Economy
  • FASS Fuel Systems Reduces Carbon Monoxide & Carbon Dioxide
  • FASS Fuel Systems have a LIFETIME Warranty on Most Applications
  • FASS Fuel Systems have a 15,000 – 17,000 Hour Life Expectancy
  • FASS Fuel Systems equates to 700,000 Plus Miles
  • FASS Fuel Systems have Up to 260 GPH
  • FASS Fuel Systems offer 160 Maximum PSI
  • FASS Fuel Systems Motor Has Up to 406 OZ Inches of Stall Torque
  • FASS Fuel Systems have Interchangeable Filters
  • FASS Fuel Systems were designed to give yesterday and today's diesel engine "Test Cell Performance" in "Real World Conditions."
  • FASS Systems are made with very tight tolerances
  • FASS Systems are constructed with Viton Seals and O-Rings
  • FASS Systems Use Mandrel Bent Fittings To Reduce Friction Loss and Turbulence
  • FASS Systems are made with Billet-6061 T6 Aluminum
  • FASS Systems are made with a Serviceable Motor Assembly
  • FASS Systems provide reliable High Volume Fuel Delivery
  • FASS Systems flow 90 to 260 Gallons Per Hour
  • FASS Systems undergo 17 tests before they leave the factory
  • FASS System Filter Cross References are Available
  • FASS Systems provide Secure and Reliable Fuel Delivery


FASS Fuel Pumps are Proven the World Over weather there installed in Auxiliary Power Units, Armored Reconnaissance Vehicles, Class 8 Tractors or your Diesel Pickup. The FASS Fuel Air Separation System provides the most effective technology designed specifically for diesel engines to remove water, particulates, vapor and entrained air from diesel fuel. The FASS Pump System replaces the Cummins factory lift pump and filters system, and enhances the fuel delivery to the Powerstroke and Duramax with a commercial duty system designed to last between 13,000 to 15,000 hours of continuous use. FASS Systems are covered by a lifetime warranty on select models.

Your High Performance diesel engine demands higher fuel flows. Yet, higher fuel flows increase the vacuum at the fuel pump and agitation in the fuel tank. These factors generate additional air/vapor in the fuel system preventing your engine from producing maximum power and efficiency. Incorporating the FASS System into your diesel engines fuel delivery system will remove the entrained air/vapor which has been proven to cause galling and pitting of the injector barrel and plunger assemblies. The FASS System is the best possible insurance for helping to prevent injector tip erosion.

The FASS product line is protected by 2 patents, 7,025,048 and 6,892,710. The company became incorporated in April of 2003 and started in a garage selling 30-40 units per month. The company now has grown to about 1,300 units per month and prides itself on the excellence of the product as well as the reputation of the company. The FASS products were invented by Brad Ekstam, president of Diesel Performance Products, Inc. Brad knew there was a problem with a diesel engine’s performance. Through many tests and discoveries the FASS product line was born.

As the product grew in demand, there were more opportunities to discover the full potential of our product. Through countless hours of research and development, the company has improved its products to be the best of their kind in a growing industry. The Fuel Air Separation System, known as the FASS, and the High Performance Fuel Pumps, known as the HPFP, have had the privilege to be part of some of America’s favorite racing, pulling and off-road teams! The company manufactures and assembles the products entirely in the United States. The company is members of the Specialty Equipment Market Association (SEMA) and attends the shows regularly.

In the company's own words:
"We, at Diesel Performance Products, have over 15 years experience in building the highest quality Fuel Air Separation Systems and electric diesel fuel pumps available. It is this experience that has lead us to use a gerotor specific fuel pump. Our success in the class 8 truck market has been above the rest. Our pumps typically last around 500,000 + miles! Since 1994 we’ve made many improvements to increase life expectancy and dependability. Our confidence is evident in our warranty. We started off with a 1 year warranty and we now offer up to a conditional 6 year warranty!!

In 2003 we not only set the standard for diesel fuel pumps in the pickup truck market, we “KEEP” raising the bar. With over 90% of our machining, and all of our assembly and testing performed under one roof, we maintain the highest quality standards throughout the industry. The FASS Systems undergo 25 vigorous tests before being shipped. Both designs are subjected to numerous tests for your quality assurance and to maintain the highest standards.

Our R & D department is continually improving the FASS product line. We realize the design of the FASS product line exceeds performance and quality expectations. To create this standard, we use one of the highest grades of aluminum, T6061, as a major component. As you may already know, we also use motor specific brushes in our electric motors to maintain the same high quality standard and increase the overall life of our units. Due to the brute size of our motor armatures we are able to achieve superior levels of stall torque. The increased amount of stall torque insures extreme cold weather starts by flowing gelling fuel."

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