Sierra's 18-7249 Float Kit is designed for use in Mercury marine applications. It fits WM-3, 5, 6, 8, 9, 10, 11, 12, 13, 13A, 14, 15, 15A, 16, 16A, 17, and 18 carburetors. It is interchangeable with Mercury Marine 1395-6197 and 19273. The kit contains one Mercury 192711 Needle and Seat. Each Sierra product meets or exceeds the original equipment part it replaces.