The Fuel Supply subcategory includes components essential for delivering fuel from the tank to the engine in automotive systems. This includes fuel lines, fuel hose fittings, quick-connect couplers, fuel return lines, and related adapters or sealing components. Designed to handle a variety of fuel types—including gasoline, diesel, and ethanol blends—these parts ensure proper flow, pressure, and containment throughout the fuel system. Whether you’re replacing worn components or upgrading for performance or compatibility, this category covers all the critical connections between your fuel tank, fuel pump, and fuel injection or carburetion systems.