Sierra's 18-7746 Carburetor Kit is designed for repairing Rochester 2 barrel carburetors. It is designed for use in Mercruiser GM 4 Cylinder and 6 Cylinder (1964-1983) engines. Includes one carburetor kit per package. The kit is interchangeable with GLM 76068 and Mercruiser Stern Drive 1397-2067, 1397-2631, 1397-2634, 1397-2637, 1397-3459, 1397-3464, 1397-7542, 1397-7543, 1397-7547, 1397-8872, 1397-8873, and 823427A1. Each Sierra product meets or exceeds the original equipment part it replaces. Fit specific, check part numbers to ensure proper fit.