Mercury/Mercruiser Serial Designation
You can approximate the year of your Mercury/Mercruiser engine by looking at the Serial number and matching it with the chart below.
from to year
1300000 2109999 1963
2110000 3039999 1967
3040000 4069999 1971
4070000 4999999 1975
5000000 5999999 1978...
