Automotive Replacement Fuel Tank Filler Necks

A fuel tank filler neck is the pipe that connects the fuel filler inlet (where you insert the gas nozzle) to the vehicle’s fuel tank; replace it if it's corroded, leaking, has split or warped material, or if the filler cap won't seal properly

Match the replacement by vehicle make, model, year, engine/transmission where specified, and by mounting style and hose diameter; verify OEM part numbers or compare measurements and connector types to ensure fitment

Yes—filler necks are commonly made from steel, aluminized steel, or molded plastic; steel options are more corrosion-resistant when coated, while plastic resists rust and can be lighter; choose based on local climate, road salt exposure, and vehicle compatibility

Replacement filler necks typically range from budget options under $50 to higher-cost units over $100 depending on material and vehicle fit; factor in potential additional costs for hoses, clamps, and professional installation if needed

DIY installation is possible for many models but usually requires basic automotive tools—screwdrivers, socket set, jack and stands, clamps and replacement hoses—and ability to work safely under the vehicle and disconnect fuel-system components; consult a repair manual for torque specs and safety steps

Look for fuel odors near the filler area, visible rust or holes, fuel leakage when filling, difficulty sealing the gas cap, or check-engine light codes related to evaporative emissions as indicators of a failing filler neck

Keep the filler area clean, ensure clamps and hoses are tight and free of cracks, use a proper fuel cap, and inspect periodically for corrosion or damage—addressing road salt and moisture promptly helps prevent premature degradation