MERCRUISER GEARCASES
Z-Antriebszuordnungstabelle © Boote Schollerer
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HORSEPOWER DESCRIPTION YEAR RATIO & TEETH #
120 thru 140 4 cyl. One drive 1971 thru 79 1.98 / 20-24
120 thru 140 4 cyl. One drive 1980 thru 84 1.98 / 20-24
170 thru 190 4 cyl. One drive 1971 thru 79 1.84 / 17-19
170 thru 190 4 cyl. One drive 1980 thru 84 1.84 / 17-19
165 6 cylinder 1971 thru 79 1.65 / 24-24
165 6 cylinder 1980 thru 84 1.65 / 24-24
188 thru 260 V-8 1971 thru 79 1.5 / 20-22
188 thru 260 V-8 1980 thru 84 1.5 / 20-22
120 & 140 Alpha 4 cylinder 1985 thru 89 1.98 / 20-24
120 & 140 Alpha 4 cyl (New) **1985 thru 89 1.98 / 20-24
170 thru 190 Alpha 4 cylinder 1985 thru 89 1.84 / 17-19
170 thru 190 Alpha 4 cyl (New) **1985 thru 89 1.84 / 17-19
198 Alpha V-8 1985 thru 89 1.65 / 24-24
198 Alpha V-8 (New) **1985 thru 89 1.65 / 24-24
198 thru 260 Alpha V-8 1985 thru 89 1.5 / 20-22
198 thru 260 Alpha V-8 (New) **1985 thru 89 1.5 / 20-22
120 & 140 Gen 2 4 cylinder 1990 thru pr 1.98 / 20-24
175 & 4.3 Gen 2 V-6 1990 thru pr 1.84 / 17-19
198 Alpha V-8 1990 thru pr 1.65 / 24-24
198 thru 260 Gen 2 V-8 1990 thru pr 1.5 / 20-22
All engines Special order 1986 thru pr See uppers & lowers
Marine Engine Parts
HORSEPOWER DESCRIPTION YEAR DETAILS & NOTES
120 thru 228 One drive 1971 thru 79 Note: 260hp use 113A
120 thru 228 One drive 1980 thru 84 Note: 260hp use 113A
120 thru 260 Alpha drive 1985 thru 89 Standard rotation
 120 thru 260 **New Alpha  1985 thru 89 Standard rotation
HORSEPOWER DESCRIPTION YEAR DETAILS & NOTES
120 thru 260 Alpha drive 1985 thru 89 Counter rotation
120 thru 260 Generation 2 1990 thru pr Standard rotation
120 thru 260 Generation 2 1990 thru pr Counter rotation
All engines Bravo 1 1986 thru 89 Short housing
All engines Bravo 1 1990 Long housing
All engines Bravo 1 1991 thru pr Long with oil hole
All engines Bravo 2 1990 Large drive
All engines Bravo 3 1991 thru pr Daul propeller
HORSEPOWER DESCRIPTION YEAR DETAILS & TEETH #
All engines Bravo upper 1986 No oil reservoir / 27-32
All engines Bravo upper 1987 thru 90 Oil reservoir / 27-29
All engines Bravo upper 1991 thru pr Oil transfer hole / 23-30
All engines Bravo upper 1986 No oil reservoir / 27-32
All engines Bravo upper 1987 thru 90 Oil reservoir / 27-29
All engines Bravo upper 1991 thru pr Oil transfer hole / 23-30
All engines Bravo upper 1986 No oil reservoir / 27-32
All engines Bravo upper 1987 thru 90 Oil reservoir / 27-29
All engines Bravo upper 1991 thru pr Oil transfer hole / 23-30
120 & 140 4 cyl. One drive 1971 thru 79 1.98 / 20-24
120 & 140 4 cyl. Pre Alpha 1980 thru 84 1.98 / 20-24
120 & 140 4 cyl. One drive 1971 thru 79 1.84 / 17-19
170 thru 190 4 cyl. Pre Alpha 1980 thru 84 1.84 / 17-19
160 & 165 6 cyl. One drive 1971 thru 79 1.65 / 24-24
160 & 165 6 cyl. Pre Alpha 1980 thru 84 1.65 / 24-24
188 thru 260 V-8 One drive 1971 thru 79 1.5 / 20-22
188 thru 260 V-8 Pre Alpha 1980 thru 84 1.5 / 20-22
UPPER GEARCASE DRIVES
MERCRUISER UPPER DRIVE ASSEMBLIES
HORSEPOWER DESCRIPTION YEAR DETAILS & TEETH #
120 & 140 Alpha 4 cyl 1985 thru 89 1.98 / 20-24
120 & 140 Alpha 4 cyl (New) **1985 thru 89 1.98 / 20-24
170 / 190 Alpha 4 cyl & V-6 1985 thru 89 1.84 / 17-19
170 / 190 Alpha 4 cyl & V-6 (New) **1985 thru 89 1.84 / 17-19
198 Alpha V-8 1985 thru 89 1.65 / 24-24
198 Alpha V-8 (New) **1985 thru 89 1.65 / 24-24
228 / 260 Alpha V-8 1985 thru 89 1.5 / 20-22
228 / 260 Alpha V-8 (New) **1985 thru 89 1.5 / 20-22
120 & 140 Gen 2 4 cyl 1990 thru pr 1.98 / 20-24
175 / 4.3 Gen 2 V-6 1990 thru pr 1.84 / 17-19
198 Gen 2 V-8 1990 thru pr 1.65 / 24-24
228 / 260 Gen 2 V-8 1990 thru pr 1.5 / 20-22