What is the AirDog® FPII system?

The AirDog® FPII system is an advanced fuel filtration and delivery system designed to enhance the performance and efficiency of diesel engines. It removes water, particulates, and air from the fuel before it reaches the engine, ensuring a cleaner and more reliable fuel supply.

How does the AirDog® FPII system work?

The AirDog® FPII system utilizes a high-efficiency fuel pump and a two-stage water separator to remove impurities and air from the fuel. It also maintains the optimal fuel pressure required for efficient engine performance, resulting in improved fuel efficiency and reduced wear on the injectors and other engine components.

What are the benefits of using the AirDog® FPII system?

Using the AirDog® FPII system offers several benefits, including improved fuel efficiency, increased horsepower, extended injector life, reduced engine wear, and a cleaner fuel system. It provides superior filtration and fuel delivery, contributing to the overall performance and longevity of the diesel engine.

Where can I purchase the AirDog® FPII system?

You can purchase the AirDog® FPII system directly from our website, airdogdiesel.com/products/fpii/. We offer a secure online shopping experience, and our authorized dealers may also have the product available. Feel free to reach out to us for more information or assistance with purchasing.

AirDog® FPII 4G Fuel Air Separation System

The Pre-Combustion Solution for Maximum Engine Efficiency! The AirDog® FPII 4G Fuel Air Separation System is the state-of-the-art fuel processor that removes not only water and particulate contaminates from the fuel flow to the engine, but most importantly, the entrained air and vapor. Additionally, the AirDog® maintains the necessary net positive pressure to the engine fuel pump to prevent cavitation and the formation of vapor. The dual-port design feeds the gerotor from both sides, which hydraulically balances the outer gear. These special features provide the quietest and most durable fuel pumps on the market. The dash-mounted indicator light lets you know when to change the filter without waste of filter life or fuel economy. No more guessing! The stainless steel adjustable pressure regulator is part of the demand flow system that recycles the fuel not needed by the engine back to the water separator and through the filter for continuous multi-pass filtration. The patented AirDog® is the only fuel air separation system with third-party verified positive air separation. Our patented air bleed port vents the separated air and vapor from the fuel with a barely measurable pressure drop or loss of flow. The AirDog® air and vapor return line connects to the engine return line with engine-specific fittings, making installation quick, easy, and cost-effective.

AirDog® products are designed specifically for the most popular commercial and industrial diesel engines. See the list below for the engine-specific system for your application. Don’t see exactly what you’re looking for? PureFlow™ also offers Universal Kits, in various pump pressures and flows, adaptable to almost any commercially available diesel engines in service for trucking, industrial, off-highway (agriculture, excavation, mining, construction), RV, marine, and more. If you have any questions about the AirDog® or placing an order, please contact us at 1-877-463-4373 or sales@airdogdiesel.com.

*For AirDog® products for up to 1-ton pickup trucks, click here for the Light Duty Systems site.

The AirDog® FPII 4G Fuel Air Separation System can be installed on many engines types, such as: