STP Fuel Injector System Cleaner, 5.25 oz. is a solution designed to restore the performance of your vehicle's fuel injectors. This super-concentrated cleaner effectively unclogs and revitalizes dirty fuel injectors, helping your engine run smoother and more efficiently. Safe for use in gasoline engines, it features a powerful blend of concentrated detergents that dissolve and remove carbon, gum, and varnish deposits accumulated over time. By eliminating these deposits, the cleaner addresses common issues such as hard starts, lost acceleration, and rough idling, allowing your engine to operate at its full potential. Using STP Fuel Injector System Cleaner helps restore lost power, improve fuel efficiency, and enhance overall vehicle performance. Enjoy smoother starts, better acceleration, and savings at the pump. Model Number: 18041G