Fuel Filler Neck

The fuel filler neck is the unsung hero of your vehicle’s fueling system, bridging the gap between the gas cap and the fuel tank. While it may seem like a simple tube, its design and condition are vital for safe, efficient refueling and for protecting your engine and emissions system. A compromised filler neck can lead to leaks, check engine lights, and even hazardous situations at the pump.

Most drivers don’t realize that a corroded or damaged fuel filler neck can introduce contaminants into the tank, trigger evaporative emissions codes, or even cause fuel to spill during refueling. According to industry data, over 15% of vehicles older than 10 years show signs of filler neck corrosion or seal failure. This can lead to costly repairs downstream, including issues with the Air Box/Air Cleaner and emissions components.

The solution lies in proactive inspection and timely replacement of the fuel filler neck. Quality OEM and aftermarket options are available for most vehicles, ensuring a precise fit and corrosion resistance. When replacing the filler neck, it’s also wise to inspect related components such as the fuel cap, vent hoses, and even the Air Box/Air Cleaner for contamination. AutoPartEx offers a wide selection of fuel filler necks, including hard-to-find models for AMC, Acura, and Alfa vehicles, ensuring you get the right part for your application.