Sierra's 18-7215 Carburetor Kit is designed for use with Mercury/Mariner 40 HP (4 Cylinder), 45 HP (4 Cylinder), and 50 HP (4 Cylinder) outboard engines. It is designed for use with carburetor models WMA-1, WMA-3, and WMA-4. Includes one carburetor kit per package. The kit is interchangeable with GLM 40640 and Mercury Marine 1395-9024. Each Sierra product meets or exceeds the original equipment part it replaces. Fit specific, check part numbers to ensure proper fit.