Used Radio System

We list 2 used Radio System options from 1 verified sellers covering 2 makes. The fuel filler neck is the tube that connects the fuel filler opening at the body panel to the fuel tank. Gas flows through it every time you fill up, and it is part of the sealed evaporative emissions system. Filler necks corrode over time, especially in salt-belt states. Rust eats through the tube and creates holes that leak fuel vapors or even liquid fuel. This is a safety hazard and an emissions failure. The filler neck connects to the tank with a hose clamp or flange, and it mounts to the body through a rubber grommet at the filler opening. Capless fuel systems have a more complex filler neck with an integrated check valve and drain system. These are more expensive new, which makes a used OEM unit an attractive option. Make sure the neck matches your fuel system type (capped vs. capless) and tank configuration. Top makes include Mercedes Benz, Bmw. Browse our Radio System listings to find a corrosion-free replacement for your vehicle's fuel system.