Want to upgrade the fuel system on your 08–10 Ford 6.4L Powerstroke? The AirDog II-5G combines high-volume fuel delivery with air and vapor separation in a single frame-mounted system, providing your 6.4L with a more dependable fuel supply as engine demands increase. With 100, 165, and 220 GPH options, there's a configuration for everything from a stock daily driver to a heavily modified truck. The system completely bypasses the factory fuel pump, drawing fuel directly from the tank and sending it through the AirDog before feeding the factory supply line.
The application-specific system mounts to the frame using the included sandwich-plate mounting system, with the 100 and 165 GPH versions connecting to the factory suction line and the 220 GPH version using a 5/8-inch draw straw for increased fuel volume. Air and vapor, separated by the AirDog, are routed back to the tank via a return Y that connects to the factory engine return. All three systems are manufactured in the USA and purpose-built for the 2008–2010 6.4L Powerstroke.
Which Flow Rate should you choose?
When it comes to upgrading your fuel system, choosing the right GPH (gallons per hour) rating isn’t about picking the biggest number; it’s about matching your pump to your truck’s real-world demands. An AirDog aftermarket fuel system doesn’t just supply fuel; it improves filtration, removes air/vapor, and ensures your injection system gets consistent, reliable pressure. But choosing between 100, 165, and 220 GPH? That’s where a lot of people get stuck.
100 GPH: Stock Reliability Upgrade (STOCK-500 HP)
- Perfect for stock trucks or very mild setups. If you want to eliminate factory fuel issues and improve reliability without overbuilding your system, this is the ideal choice.
165 GPH: Daily Driver + Towing Sweet Spot (500-800 HP)
- Best for trucks with mild tuning or regular towing. This is the most popular option for owners who want extra fuel capacity without going overkill.
220 GPH: Performance Builds (800-1100 HP)
- Designed for higher horsepower setups with increased fuel demand. Ideal for trucks running upgraded injectors or pushing harder under load.