Dorman 577-250 Fuel Filler Neck: Automotive. Buy Dorman 577-250 Fuel Filler Neck: Filler Necks - ✓ FREE DELIVERY possible on eligible purchases. Designed to prevent fuel leaks during fill ups and therefore diminish the associated likelihood of air and roadway pollution 。 Engineered to comply with current emission standards and to pass state inspections 。 Powder coated and constructed of durable steel for lasting use 。 Direct replacement for a proper fit every time 。 Keep expensive, potentially hazardous gas where it belongs: in your tank 。 Pump gas with the assurance that you're helping protect the environment while saving money. Designed to prevent fuel leaks during fill ups and therefore diminish the associated likelihood of air and roadway pollution. Fuel Filler Neck's resists moisture build up. Rust, corrosion, and the deterioration they cause are averted. Keep expensive, potentially hazardous gas where it belongs: in your tank. 。 。 。