Is your 98.5–02 Dodge 5.9L Cummins struggling to maintain the fuel supply it needs? The AirDog Raptor 4G replaces the limitations of the factory fuel delivery system with a pump that provides a steady, dependable supply of fuel. With 100 GPH and 150 GPH options, you can size the system to your truck rather than simply installing the largest pump available. Whether you're restoring a stock truck, building a reliable daily driver, or adding fuel upgrades, the Raptor 4G provides the consistent fuel delivery your setup needs.
The Raptor 4G's four-bearing pump design and internally regulated fuel system are built for dependable operation while eliminating the need for a dedicated return line. An adjustable regulator allows fuel pressure to be tailored to the application, with the pump preset around 10–13 PSI for stock configurations. Each application-specific kit is designed for a straightforward installation and is manufactured in the USA.
What Flow Rate Is Right For Me?
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. 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.
150 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.
INSTALLATION NOTES:
- The in-tank AirDog unit is designed for trucks featuring the in-tank lift pump. For those unaware, all of the 1998.5-2004.5 Cummins-powered Rams came from the factory with a block-mounted lift pump. However, if it ever failed and had it replaced previously, it very likely was retrofitted to the newer design that actually placed the pump in the fuel tank. If you're not sure where your pump is located, simply "bump" the key to engage the pump, then listen to see whether the pump's hum comes from the engine compartment or the fuel tank.