Description 577-233 Dorman Fuel Filler Neck Upgrade your vehicle’s fuel system with the 577-233 Dorman Fuel Filler Neck. This high-quality filler neck from Dorman is designed to provide a secure and reliable connection between your fuel tank and the fuel cap. Main Features Ensures a tight seal to prevent leaks and evaporation Constructed from durable materials for long-lasting performance Direct fit for easy installation without modifications Designed to meet or exceed OEM specifications Upgrade your fuel system with confidence using the 577-233 Dorman Fuel Filler Neck.