Need help finding the right part for your boat motor? Send us an email by clicking here or use our "Advanced Search" tool to search for an OEM number, GLM number, or Sierra number.

Not sure which part you need? Find the part number in the chart below and search for that part number using our "Product Search" tool found in the upper left hand corner of this page.

For instance, if you have a 120/140, 1.98 ratio, years 1967-1969, SNS (Serial No. Range) 2062141-2791956 you would search from "Lower Gearcase Housing" number 17000.