The Briggs & Stratton 398188 is a genuine OEM Needle and Seat Kit (also known as a float valve kit) used to repair carburetors on a wide range of small gas engines. It is most commonly replaced when a carburetor is flooding with gas or the engine is difficult to start. Key Product Details Purpose: Regulates the flow of fuel into the carburetor bowl. Compatibility: Fits several Briggs & Stratton engine series including Quantum, Max, and Industrial Plus (typically 3.5 to 6 HP models). It is also used in equipment from brands like Toro, John Deere, and Craftsman. Replaces Part…