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Mercruiser Sterndrive Gear Case Shims

Gear Case Shims

Find gearcase shims & shim kits — upper cover bearing shim kits, upper drive gear shim kits, upper drive gear spacer shim kits, upper driven gear shim kits, lower drive shaft upper bearing shim kits, forward gear bearing shim kits & reverse gear shims — for your Mercruiser stern drive using the application chart from the Mercury Quicksilver catalog.

Need other parts? If you need parts not listed in the application guide, please see:

Model Year Range Serial No. Range Shim Kit: Upper Cover Bearing Shim Kit: Upper Drive Gear Spacer Shim: Upper Drive Gear Shim Kit: Upper Driven Gear Shim Kit: Lower Drive Shaft Upper Bearing Shim Kit: Forward Gear Bearing Shim: Reverse Gear
I 1963 1534570 - 1536617 15-32563A 1 15-29955A 1
I 1963 1536618 - 1684187 15-32563A 1 15-57007A 1 15-29955A 1
IA / IB / IC & EZ Shift 1964 - 1966 1684188 - 2065186 15-32563A 1 15-35980A 1 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
120 / 140 1967 2062141 - 2187468 15-36178A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
120 / 140 1967 - 1969 2187469 - 2791956 15-32563A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
120 / 140 1970 - 1971 2791957 - 3134193 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
120 / 140 1971 - 1977 3213658 - 4893634 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
120 / 140 1978 - 1982 4893635 - 6225576 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-97166
470 1976 - 1977 4208730 - 4893934 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
470 / 485 1978 - 1982 4893835 - 6225575 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-97166
160 1967 2065190 - 2182197 15-36178A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
160 1967 - 1969 2182198 - 2763441 15-32563A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
165 1970 - 1971 2763442 - 3134193 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
165 1971 - 1977 3213658 - 4890459 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
165 1978 - 1981 4890460 & up 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-97166
888 1971 - 1972 3106717 - 3472477 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
888 1973 - 1977 3472478 & up 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
225-S 1974 3856268 - 4200499 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
233 1975 - 1977 4200500 & up 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
898 / 228 1977 4782330 - 4898729 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
898 / 228 1978 - 1982 4898730 - 6225576 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-97166
250 1977 4791300 - 4898729 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-31535A 1
260 1978 - 1982 4898730 - 6225576 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-97166
R 1983 - 1984 6225577 & up 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-57007A 1 15-47397A 1 15-97166
MR / Alpha One 1984 - 1990 6225577 & up 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-42637A 1 15-47397A 1
MR / Alpha One (CR) 1983 - 1990 6225577 & up 15- 45691A 1 15-35980A 1 15-71013 15-36178A 1 15-42637A 1 1 15-47397A 1
Alpha One SS 1986 - 1989 0A545004 & up 15-45691A 1 15-35980A 1 15-71013 15-42637A 1 15-47397A 1
Alpha One Gen II 1991 - 1995 0D469859 - 0F679999 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-42637A 1 15-47397A 1
Alpha One Gen II 1996 - 2008 0F680000 & up 15-32563A 1 15-35980A 1 15-71013 15-36178A 1 15-42637A 1 15-44491A 1
Alpha One Gen II (CR) 1991 - 1995 0D469859 - 0F679999 15-45691A 1 15-35980A 1 15-71013 15-36178A 1 15-42637A 1 1 15-47397A 1
Alpha One Gen II (CR) 1996 - 2008 0F680000 & up 15-32563A 1 15-35980A 1 15-71013 15-36178A 1 15-42637A 1 1 15-44491A 1
Vazer 2007 - 2008 0W995000 & up 15-32563A 1 15-35980A 1 15-36178A 1 15-42637A 1 15-44491A 1
Bravo I 1988 - 1999 0B664190 - 0M100000 23-87560091 15-86749A 1 4 15-87157A 1
Bravo I 1988 - 1999 0B664190 - 0M100000 23-87560094 15-92914A 1 5 15-87157A 1
Bravo I 1988 - 1999 0B664190 - 0M100000 23-87560097 15-87157A 1
Bravo I & X / XR / XZ 2000 - 2004 0M100001 - 0W199999 6 15-86749A 1 4 15-87157A 1
Bravo I & X / XR / XZ 2000 - 2004 0M100001 - 0W199999 6 15-92914A 1 5 15-87157A 1
Bravo I & X / XR / XZ 2004 - 2008 0W200000 & up 8 6 15-86749A 1 4 15-87157A 1
Bravo I & X / XR / XZ 2004 - 2008 0W200000 & up 8 6 15-92914A 1 5 15-87157A 1
Bravo II 1988 - 1999 0B664190 - 0M100000 23-87560091 15-86749A 1 4 15-55499A 1
Bravo II 1988 - 1999 0B664190 - 0M100000 23-87560094 15-92914A 1 5 15-55499A 1
Bravo II 1988 - 1999 0B664190 - 0M100000 23-87560097 15-55499A 1
Bravo II & II X 2000 - 2004 0M100001 - 0W199999 6 15-86749A 1 4 15-55499A 1
Bravo II & II X 2000 - 2004 0M100001 - 0W199999 6 15-92914A 1 5 15-55499A 1
Bravo II & II X 2004 - 2008 0W200000 & up 8 6 15-86749A 1 4 15-55499A 1
Bravo II & II X 2004 - 2008 0W200000 & up 8 6 15-92914A 1 5 15-55499A 1
Bravo III 1988 - 1999 0B664190 - 0M100000 23-87560091 15-86749A 1 4 15-87157A 1 15-805078A 1
Bravo III 1988 - 1999 0B664190 - 0M100000 23-87560094 15-92914A 1 5 15-87157A 1 15-805078A 1
Bravo III 1988 - 1999 0B664190 - 0M100000 23-87560097 15-87157A 1 15-805078A 1
Bravo III & III X 2000 - 2004 0M100001 - 0W199999 6 15-86749A 1 4 15-87157A 1 15-805078A 1
Bravo III & III X 2000 - 2004 0M100001 - 0W199999 6 15-92914A 1 5 15-87157A 1 15-805078A 1
Bravo III & III X 2004 - 2008 0W200000 & up 8 6 15-86749A 1 4 15-87157A 1 15-805078A 1
Bravo III & III X 2004 - 2008 0W200000 & up 8 6 15-92914A 1 5 15-87157A 1 15-805078A 1
Blackhawk 1994 - 1995 0F186717 & up 23-87560091 15-42637A 1 15-87157A 1 15-805078A 1
II 1962 - 1967 1474909 - 2278488 7 15-31535A 1
II (1.78) 1968 - 1969 2398798 - 2671321 15-31535A 1
III 1968 - 1972 2373127 - 3002613 15-36178A 1
III 1968 - 1972 2373127 - 3002613 15-36178A 1
215E / H 1970 - 1972 2782203 - 2915034 15-55499A 1
TR 1973 - 1993 3377316 & up 15-55499A 1 15-62833A 1 7 15-55499A 1 2
TR 1973 - 1993 3377316 & up 15-55499A 1 15-62833A 1 7 15-47397A 1 3
TRS 1973 - 1993 3377316 & up 15-55499A 1 15-62833A 1 7 15-47397A 1 2
TRS 1973 - 1993 3377316 & up 15-55499A 1 15-62833A 1 7 15-39899A 1 3
1 Use shims 17615 14 thru 17615 26.
2 LH
3 RH
4 shim above upper bearing
5 shim below lower bearing
6 Shim races available from .058 to .066 thick. Order part number 23-864596xxx (058 thru 066). Shim race thickness is the last 3 digits of the part number.
7 Order alternate shim kit 15-846353A 1
8 Shims available from .028 to .040 thick. Order part number 15-888927xxx (028 thru 040). Shim thickness is the last 3 digits of the part number.