Discover the ultimate solution for expanding your fuel storage with our 3 Gallon Extension. Designed for seamless compatibility, this extension allows you to stack any Fuel Pack on top of the 3 Gallon RotoPax, 3.5 FuelPax, or 4.5 FuelPax. Whether you're gearing up for a long journey or need extra capacity for your adventures, this extension ensures you have the fuel you need, when you need it. For stacking the 3 Gallon on top of a 1, 2, or 4 Gallon Fuel Pack, use our standard extension. Trust in rugged reliability and enhance your overlanding experience with ease.