Sierra 18-7746 Carburetor Kit Sierra Carburetor Kit Repair kit for Rochester two-barrel carburetor Sierra part number: 18-7746 Interchangeable with the following: GLM 76068, Mercruiser 823427A1, 1397-3464, 1397-2634, 1397-2637, 1397-2631, 1397-3459, 1397-2067, 1397-7542, 1397-7543, 1397-7547, 1397-8872, 1397-8873