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Mercury Outboard Serial Number Guide

Mercury outboard engines have a serial number tag that is located on the swivel bracket (port or starboard); or, check the instruction plate, located between the thumb screws above the steering tube. The top number on the plate is the serial number, and the number directly beneath it is the four-digit year of manufacture.

Mercury Outboard
HP CYL BEG. S/N YEAR HP CYL BEG. S/N YEAR HP CYL BEG. S/N YEAR
2.2 1 8075603 1984 7.5 2 4691222 1977 20 2 4580036 1977
2.2 1 8087123 1985 7.5 2 4851693 1978 20 2 4819249 1978
2.2 1 A800761 1986 7.5 2 5226935 1979 20 2 5183393 1979
2.2 1 A805221 1987 7.5 2 5524660 1980-81 20 2 5606492 1980-81
2.2 1 A817421 1988 7.5 2 5936301 1982 20 2 A910971 1986
2.2 1 A837101 1989 7.5 2 6239857 1983 20 2 B114231 1987
3 1 A855097 1990 7.5 2 6430041 1984 20 2 B238464 1988
3.4 L 6 6436883 1984 7.5 2 6611886 1985 20 2 B385500 1989
3.4 L 6 A129445 1985 8 2 A197112 1986 20 2 C221500 1990
3.4 L 6 A912426 1986 8 2 B114231 1987 22 (200) 2 1292910 1960
3.5 1 6202173 1983 8 2 B233200 1988 22 (200) 2 1339948 1961
3.5 1 6434771 1984 8 2 B385500 1989 25 2 1467499 1962
3.5 1 6594744 1985 8 2 C221500 1990 25 2 5705532 1980-81
3.6 1 5404657 1980-81 9.8 2 5206550 1979 25 2 5942041 1982
3.6 1 5910968 1982 9.8 2 5541280 1980-81 25 2 6185159 1983
3.9 1 1655013 1964 9.8 2 5965263 1982 25 2 6453343 1984
3.9 1 1738941 1965 9.8 2 6263906 1983 25 2 6593849 1985
3.9 1 1865633 1966 9.8 2 6438338 1984 25 2 A911346 1986
3.9 1 2098037 1967 9.8 2 6620196 1985 25 2 B114231 1987
3.9 1 2278851 1968 9.8 (100) 2 1397581 1961 25 2 B238464 1988
4 1 2498136 1969 9.8 (110) 2 1455240 1962 25 2 B385500 1989
4 1 2771662 1970 9.8 (110) 2 1474328 1963 25 2 C221500 1990
4 1 3028361 1971 9.8 (110) 2 1607083 1964 35 4 1570507 1963
4 1 3296137 1972 9.8 (110) 2 1742746 1965 35 2 1628795 1964
4 1 3529446 1973 9.8 (110) 2 1865779 1966 35 2 1755799 1965
4 1 3764825 1974 9.8 (110) 2 2098352 1967 35 2 1960827 1966
4 2 5589202 1980-81 9.8 (110) 2 2290663 1968 35 2 2097800 1967
4 2 9075839 1976 9.8 (110) 2 2508759 1969 35 2 2300972 1968
4 2 9172806 1978 9.8 (110) 2 2798057 1970 35 2 2487558 1969
4 1 A818721 1988 9.8 (110) 2 3002814 1971 35 2 6445653 1984
4 1 A837101 1989 9.8 (110) 2 3263263 1972 35 2 6626696 1985
4 1 A855097 1990 9.8 (110) 2 3482753 1973 35 2 A922171 1986
4 1 A906702 1986 9.8 (110) 2 3795658 1974 35 2 B110789 1987
4 1 B114109 1987 9.8 (110) 2 4079675 1975 35 2 B238644 1988
4.5 1 4108120 1975 9.8 (110) 2 4304785 1976 35 2 B393190 1989
4.5 1 4377557 1976 9.8 (110) 2 4605112 1977 35 (300) 4 1271885 1960
4.5 1 4597262 1977 9.8 (110) 2 4839254 1978 40 2 2874704 1970
4.5 1 4869518 1978 9.9 2 A918999 1986 40 2 3043031 1971
4.5 1 5270784 1979 9.9 2 B114231 1987 40 2 3219678 1972
4.5 1 5595532 1980-81 9.9 2 B233200 1988 40 2 3474578 1973
4.5 1 6025119 1982 9.9 2 B385500 1989 40 2 3859435 1974
4.5 1 6232381 1983 9.9 2 C221500 1990 40 2 4118385 1975
4.5 1 6428076 1984 10 2 1290910 1960 40 2 4362215 1976
4.5 1 6608536 1985 15 2 1288910 1960 40 2 4564002 1977
5 1 A819951 1988 15 2 1346448 1961 40 2 4860103 1978
5 1 A837101 1989 15 2 B293117 1988 40 2 5174089 1979
5 1 A855097 1990 15 2 B385500 1989 40 2 5556230 1980-81
6 2 1408611 1961 15 2 C221500 1990 40 2 5991215 1982
6 2 1485612 1962 18 2 5860332 1980-81 40 2 6228285 1983
6 2 1551443 1963 18 2 5954911 1982 40 4 C159200 1989
6 2 1607513 1964 18 2 6171607 1983 40 4 C221500 1990
6 2 1745521 1965 18 2 6443973 1984 40 350 2 1356948 1961
6 2 1958278 1966 18 2 6617631 1985 45 4 1476510 1962
6 2 2096171 1967 20 2 1558310 1963 45 4 A914859 1986
6 2 2284857 1968 20 2 1606903 1964 45 4 B110789 1987
6 2 A910596 1986 20 2 1755849 1965 45 4 B238644 1988
6 2 B114231 1987 20 2 1866496 1966 45 4 B393190 1989
6 2 B233200 1988 20 2 1997990 1967 45 (400) 4 1279685 1960
6 2 B385500 1989 20 2 2296267 1968 45 (400) 4 1384806 1961
7.5 2 2529895 1969 20 2 2550065 1969 50 4 1421113 1961
7.5 2 2810637 1970 20 2 2827677 1970 50 4 1477910 1962
7.5 2 3016581 1971 20 2 2991679 1971 50 4 1552535 1963
7.5 2 3274633 1972 20 2 3226958 1972 50 4 1605952 1964
7.5 2 3488153 1973 20 2 3537531 1973 50 4 1755549 1965
7.5 2 3801458 1974 20 2 3755885 1974 50 4 1870389 1966
7.5 2 4087015 1975 20 2 4103290 1975 50 4 2097445 1967
7.5 2 4314385 1976 20 2 4293920 1976 50 4 2305101 1968
50 4 2514919 1969 80 4 4831999 1978 135 6 2839369 1970
50 4 2736807 1970 80 4 5141097 1979 135 6 3036066 1971
50 4 3009934 1971 80 4 5582562 1980-81 V-135 6 A909997 1986
50 4 3235063 1972 80 4 5987161 1982 V-135 6 B116662 1987
50 4 3478003 1973 80 4 6232941 1983 V-135 6 B241881 1988
50 4 3816308 1974 80 3 A966142 1987 V-135 6 C100861 1989
50 4 4141450 1975 80 3 B240451 1988 V-135 6 C221500 1990
50 4 4357650 1976 80 3 C100000 1989 140 6 3293234 1972
50 4 4576237 1977 85 6 1460999 1963 140 6 4865678 1978
50 4 4962056 1978 85 6 1648888 1964 140 6 5189788 1979
50 4 5193259 1979 85 4 3493913 1973 140 6 5625108 1980-81
50 4 5531630 1980-81 85 4 3865695 1974 150 6 3502806 1973
50 4 5949386 1982 85 4 4092965 1975 150 6 3752620 1974
50 4 6275323 1983 85 4 4590512 1977 150 6 4125985 1975
50 4 6448808 1984 85XS 4 4366802 1976 150XS 6 4319880 1976
50 4 6586624 1985 90 6 1755444 1965 150XS 6 4602012 1977
50 3 A912478 1986 90 6 4854301 1978 150XS 6 4868648 1978
50 3 B110789 1987 90 6 5160324 1979 V-150 6 4868998 1978
50 3 B239242 1988 90 6 5594657 1980-81 V-150 6 5129480 1979
50 3 B396036 1989 90 6 5996390 1982 V-150 6 5503247 1980-81
50 3 C221500 1990 90 6 6246856 1983 V-150 6 5944791 1982
60 3 1303411 1960 90 6 6436123 1984 V-150 6 6220254 1983
60 3 6428681 1984 90 6 6623151 1985 V-150 6 6443213 1984
60 3 6609651 1985 90 6 A902436 1986 V-150 6 6616991 1985
60 3 A197392 1986 90 3 B110054 1987 V-150 6 A904646 1986
60 3 B110789 1987 90 3 B240451 1988 V-150 6 B116662 1987
60 3 B239242 1988 90 3 C100000 1989 V-150 6 B242881 1988
60 3 B396036 1989 90 3 C221500 1990 V-150 6 C100861 1989
60 3 C221500 1990 90cc 2 A907702 1986 V-150 6 C221500 1990
65 4 1542745 1963 90cc 2 B114221 1987 V-150XR2 6 A905191 1986
65 4 1606282 1964 95 6 1869776 1966 V-150XR2 6 B289430 1988
65 4 1765044 1965 95 6 2097280 1967 V-150XR4 6 B242885 1988
65 4 1869564 1966 100 6 1503332 1962 V-175 6 4301235 1976
65 4 2119749 1967 100 6 1518384 1963 V-175 6 4563802 1977
65 4 2309311 1968 100 6 1665002 1964 V-175 6 4838074 1978
65 4 2503991 1969 100 6 1755459 1965 V-175 6 5180109 1979
65 4 2803562 1970 100 6 2318586 1968 V-175 6 5488752 1980-81
65 4 2997339 1971 100 6 2484633 1969 V-175 6 6618751 1985
65 3 3293184 1972 100 4 B209468 1988 V-175 6 A918329 1986
65 3 3547987 1973 100 4 C100000 1989 V-175 6 B116662 1987
65 3 3807833 1974 100 4 C221500 1990 V-175 6 B241881 1988
65 3 4136685 1975 102cc 2 A819211 1988 V-175 6 C100861 1989
65 3 4382057 1976 102cc 2 A837101 1989 V-175 6 C221500 1990
70 3 1296411 1960 110 6 1870204 1966 V-200 6 4839034 1978
70 3 1413611 1961 110 6 2097385 1967 V-200 6 5158929 1979
70 3 1503459 1962 115 6 2836019 1970 V-200 6 5464486 1980-81
70 3 4382057 1976 115 6 3023086 1971 V-200 6 6073192 1982
70 3 4571652 1977 115 6 3270480 1972 V-200 6 6203991 1983
70 3 4825249 1978 115 6 3525441 1973 V-200 6 6435503 1984
70 3 5128280 1979 115 6 3761035 1974 V-200 6 6625221 1985
70 3 5579017 1980-81 115 6 4112635 1975 V-200 6 A913228 1986
70 3 5974683 1982 115 6 4310785 1976 V-200 6 B116662 1987
70 3 6279960 1983 115 6 4567952 1977 V-200 6 B241881 1988
70 3 B110054 1987 115 6 4855153 1978 V-200 6 C100861 1989
70 3 B240451 1988 115 6 5168574 1979 V-200 6 C221500 1990
70 3 C100000 1989 115 6 5600967 1980-81 210cc 2 A918999 1986
75 4 6432901 1984 115 6 6006834 1982 210cc 2 B114231 1987
75 4 6613221 1985 115 6 6262961 1983 210cc 2 B233405 1988
75 4 A197882 1986 115 6 6440183 1984 210cc 2 B385500 1989
75 3 C100000 1989 115 6 6630171 1985 V-220 6 B241881 1988
75 3 C221500 1990 115 6 A907777 1986 V-225 6 5615282 1980-81
80 4 1335465 1960 115 6 B117567 1987 V-250 6 C139860 1989
80 4 1398630 1961 115 6 B239242 1988 V-250 6 C221500 1990
80 4 2559001 1969 115 4 C100000 1989 V-275 6 C139860 1989
80 4 2783253 1970 115 4 C221500 1990 V-275 6 C221500 1990
80 4 2986444 1971 125 6 2314956 1968 V-300 6 5611648 1980-81
80 4 3186263 1972 125 6 2536210 1969 V-300 6 6239853 1983

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