Product Description: HIGH QUALITY and SAFETY ! ACDelco GT283 GM Original Equipment Black Fuel Tank Cap - Automotive Replacement Part Fuel Tank Cap Locking Door Gas Cover. The ACDelco GM Original Equipment Regular Fuel Cap is a threaded cap that seals your vehicle's fuel tank filler, and is a GM-recommended replacement for your vehicle?s original component. The fuel cap has a rubber gasket that provides a liquid-tight seal to keep fuel in and water and dirt out. The cap may have a check-valve that lets air in or out depending on the air pressure inside the tank. This original equipment regular fuel cap has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors. Provides a tight seal to keep your vehicle's fuel tank closed A sealed fuel tank reduces vapor emissions which helps the environment Prevents lost fuel in order to help reduce your trips to the gas station GM-recommended replacement part for your GM vehicle's original factory component Offering the quality, reliability, and durability of GM OE Fits for Buick Chevrolet Chevy Pontiac Saturn vehciles Thank You for Shopping!