Description Compatibility: Fuel Injectors/ Intake Ports/ Intake Valves and Combustion Chambers Unit Size: 11 Ounce Unit Type: Bottle Unit Quantity: Single Product Description When carbon deposits build up on fuel injectors, intake valves and ports, it can cause engines to hesitate, surge or lose power. It can also have a noticeable affect on fuel economy. Gumout® Fuel Injector Cleaner removes carbon deposits from these key engine parts to maximize engine performance and fuel economy. Features & Benefits Cleans Port, Indirect Fuel Injectors, Intake Valves, And Ports Prevents Future Carbon Buildup On Port, Indirect Fuel Injectors, Intake Valves And Ports Best For Maximized Performance And Fuel Economy, Reduced Emissions