Mercruiser Upper Gear Repair Kits - Sterndrive
UPPER GEAR CHART - DRIVESHAFT HOUSING GEAR REPAIR KITS
MERCURY® MERCRUISER® DRIVE SYSTEMS
Find your OEM Mercruiser driveshaft housing upper gears & upper gear repair kits for every Mercruiser drive including Alpha, Bravo, and XR drives here quickly and easily. Save money with these handy gear repair kits. Order online for discounted pricing.
| Model | Gear Ratio | Year Range | Serial # Range | Drive Gear | Driven Gear/Gear Kit | Upper Gear Repair Kit |
| IA & EZ Shift | 1.84 | 1964 - 1966 | 1684188 - 2065186 | N.S.S. | N.L.A. | N/A |
| IB & EZ Shift | 2.01 | 1964 - 1966 | 1684188 - 2065186 | N.S.S. | N.L.A. | N/A |
| IC & EZ Shift | 1.68 | 1964 - 1966 | 1684188 - 2065186 | N.S.S. | N.L.A. | N/A |
| 120/140 | 1.98 | 1967 - 1969 | 2062141 - 2791956 | N.S.S. | N.L.A. | N/A |
| 120/140 | 1.98 | 1970 - 1982 | 2791957 - 6225576 | N.S.S. | 43-55778A3 | N/A |
| 470/485 | 1.84 | 1976 - 1982 | 4208730 - 6225575 | N.S.S. | 43-75325A3 | N/A |
| 160 | 1.68 | 1967 - 1969 | 2065190 - 2763441 | N.S.S. | N.L.A. | N/A |
| 165 | 1.65 | 1970 - 1981 | 2763442 and up | N.S.S. | 43-45814A5 | N/A |
| 888 | 1.50 | 1971 - 1977 | 3106717 and up | N.S.S. | 43-18411A2 | N/A |
| 225-S | 1.50 | 1974 | 3856268 - 4200499 | N.S.S. | 43-18411A2 | N/A |
| 233 | 1.32 | 1975 - 1977 | 4200500 and up | N.S.S. | 43-8M0080756 | N/A |
| 898/228 | 1.50 | 1977 - 1982 | 4782330 - 6225576 | N.S.S. | 43-18411A2 | N/A |
| 250 | 1.32 | 1977 | 4791300 - 4898729 | N.S.S. | 43-8M0080756 | N/A |
| 260 | 1.50 | 1978 - 1982 | 4898730 - 6225576 | N.S.S. | 43-18411A2 | N/A |
| R/MR/Alpha One | 1.98 | 1983 - 1990 | 6225577 - 0D469858 | N.S.S. | 43-55778A3 | 43-803101T1 |
| R/MR/Alpha One | 1.84 | 1983 - 1990 | 6225577 - 0D469858 | N.S.S. | 43-75325A3 | 43-803114T1 |
| R/MR/Alpha One | 1.65 | 1983 - 1990 | 6225577 - 0D469858 | N.S.S. | 43-45814A5 | 43-803112T1 |
| R/MR/Alpha One | 1.50 | 1983 - 1990 | 6225577 - 0D469858 | N.S.S. | 43-18411A2 | 43-803116T1(1) |
| R/MR/Alpha One | 1.50 HD | 1983 - 1990 | 6225577 - 0D469858 | N.S.S. | 43-18411A4 | 43-803116T1 |
| R/MR/Alpha One | 1.32 | 1983 - 1990 | 6225577 - 0D469858 | N.S.S. | 43-8M0080756 | 43-803115T1 |
| Alpha One SS | 1.50 | 1986 - 1989 | 0A545004 and up | N.S.S. | 43-18411A4 | 43-803116T1 |
| Alpha One SS | 1.32 | 1986 - 1989 | 0A545004 and up | N.S.S. | 43-8M0080756 | 43-803115T1 |
| Alpha One Gen II | 2.40 | 1991 - 1997 | 0D469859 - 0K999999 | N.S.S. | 43-55778A3 | 43-803118T1 |
| Alpha One Gen II | 1.98/1.94 | 1991 - 1997 | 0D469859 - 0K999999 | N.S.S. | 43-55778A3 | 43-803118T1 |
| Alpha One Gen II | 1.65/1.62 | 1991 - 1997 | 0D469859 - 0K999999 | N.S.S. | 43-45814A5 | 43-803119T1 |
| Alpha One Gen II | 1.84/1.81 | 1991 - 1997 | 0D469859 - 0K999999 | N.S.S. | 43-75325A3 | 43-803120T1 |
| Alpha One Gen II | 1.50/1.47 | 1991 - 1997 | 0D469859 - 0K999999 | N.S.S. | 43-18411A2 | 43-803102T1 |
| Alpha One Gen II | 2.40 | 1998 - 2023 | 0L100040 and up | N.S.S. | 43-853642A2 | 43-803106T1 |
| Alpha One Gen II | 2.00 | 1998 - 2023 | 0L100040 and up | N.S.S. | 43-853640A2 | 43-803104T1 |
| Alpha One Gen II | 1.94 | 1998 - 2023 | 0L100040 and up | N.S.S. | 43-853642A2 | 43-803106T1 |
| Alpha One Gen II | 1.81 | 1998 - 2023 | 0L100040 and up | N.S.S. | 43-853643A2 | 43-803105T1 |
| Alpha One Gen II | 1.62 | 1998 - 2023 | 0L100040 and up | N.S.S. | 43-853640A2 | 43-803104T1 |
| Alpha One Gen II | 1.47 | 1998 - 2023 | 0L100040 and up | N.S.S. | 43-853641A2 | 43-803103T1 |
| Vazer | 2.77 | 2007 - 2009 | 0W995000 and up | N.S.S. | 43-853642A2 | N/A |
| Vazer | 2.58 | 2007 - 2009 | 0W995000 and up | N.S.S. | 43-853643A2 | N/A |
| Bravo I | 1.65 | 1988 - 1995 | 0B664190 - 0F729999 | N.L.A.(2) | 43-883479A4 | 43-803109T2 |
| Bravo I | 1.65 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(3) | 43-883479A3 | 43-803109T2 |
| Bravo I | 1.65 | 2000 - 2004 | 0M100001 - 0W249999 | N.S.S. | 43-883479A2 | N/A |
| Bravo I | 1.65 | 2004 - 2023 | 0W250000 and up | N.S.S. | 43-8M0060005 | N/A |
| Bravo I | 1.50 | 1988 - 1995 | 0B664190 - 0F729999 | N.L.A.(4) | 43-883473A4 | 43-803107T2 |
| Bravo I | 1.50 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(5) | 43-883473A3 | 43-803107T2 |
| Bravo I | 1.50 | 2000 - 2004 | 0M100001- 0W249999 | N.S.S. | 43-883473A2 | N/A |
| Bravo I | 1.50 | 2004 - 2023 | 0W250000 and up | N.S.S. | 43-8M0060003 | N/A |
| Bravo I | 1.36 | 1988 - 1995 | 0B664190 - 0F729999 | N.L.A.(6) | 43-883476A4 | 43-803108T2 |
| Bravo I | 1.36 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(7) | 43-883476A3 | 43-803108T2 |
| Bravo I | 1.36 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-883476A2 | N/A |
| Bravo I - Diesel | 1.65 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883479A3 | N/A |
| Bravo I - Diesel | 1.50 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883473A3 | N/A |
| Bravo I - Diesel | 1.36 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883476A3 | N/A |
| Bravo I Performance | 1.65 | 1998 - 1999 | 0L000000 - 0M100000 | N.L.A.(3) | 43-883479A3 | N/A |
| Bravo I Performance | 1.65 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-883479A2 | N/A |
| Bravo I Performance | 1.50 | 1998 - 1999 | 0L000000 - 0M100000 | N.L.A.(5) | 43-883473A3 | N/A |
| Bravo I Performance | 1.50 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-883473A2 | N/A |
| Bravo I Performance | 1.36 | 1998 - 1999 | 0L000000 - 0M100000 | N.L.A.(7) | 43-883476A3 | N/A |
| Bravo I Performance | 1.36 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-883476A2 | N/A |
| Bravo I X | 1.65 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887909A1 | N/A |
| Bravo I X | 1.50 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887903A1 | N/A |
| Bravo I X | 1.36 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887906A1 | N/A |
| Bravo I XR | 1.26 | 2000 - 2023 | 0M100001 and up | 43-8493201 | 43-840898A3 | N/A |
| Bravo I XR | 1.35 | 2000 - 2023 | 0M100001 and up | 43-8493201 | 43-840898A3 | N/A |
| Bravo I XR | 1.50 | 2000 - 2023 | 0M100001 and up | 43-8493201 | 43-840898A3 | N/A |
| Bravo I XZ | 1.50 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887903A1 | N/A |
| Bravo I XZ | 1.36 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887906A1 | N/A |
| Bravo II | 2.20 | 1988 - 1995 | 0B664190 - 0F729999 | N.L.A.(2) | 43-883479A4 | 43-803109T2 |
| Bravo II | 2.20 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(3) | 43-883479A3 | 43-803109T2 |
| Bravo II | 2.20 | 2000 - 2004 | 0M100001 - 0W249999 | N.S.S. | 43-883479A2 | N/A |
| Bravo II | 2.20 | 2004 - 2023 | 0W250000 and up | N.S.S. | 43-8M0060005 | N/A |
| Bravo II | 2.00 | 1988 - 1995 | 0B664190 - 0F729999 | N.L.A.(4) | 43-883473A4 | 43-803107T2 |
| Bravo II | 2.00 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(5) | 43-883473A3 | 43-803107T2 |
| Bravo II | 2.00 | 2000 - 2004 | 0M100001- 0W249999 | N.S.S. | 43-883473A2 | N/A |
| Bravo II | 2.00 | 2004 - 2023 | 0W250000 and up | N.S.S. | 43-8M0060003 | N/A |
| Bravo II | 1.81 | 1988 - 1995 | 0B664190 - 0F729999 | N.L.A.(6) | 43-883476A4 | 43-803108T2 |
| Bravo II | 1.81 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(7) | 43-883476A3 | 43-803108T2 |
| Bravo II | 1.81 | 2000 - 2004 | 0M100001- 0W249999 | N.S.S. | 43-883476A2 | N/A |
| Bravo II | 1.81 | 2004 - 2023 | 0W250000 and up | N.S.S. | 43-8M0060004 | N/A |
| Bravo II | 1.65 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(4) | 43-883473A3 | 43-803107T2 |
| Bravo II | 1.65 | 2000 - 2004 | 0M100001- 0W249999 | N.S.S. | 43-883473A2 | N/A |
| Bravo II | 1.65 | 2004 - 2023 | 0W250000 and up | N.S.S. | 43-8M0060003 | N/A |
| Bravo II | 1.50 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(7) | 43-883476A3 | 43-803108T2 |
| Bravo II | 1.50 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-883476A2 | N/A |
| Bravo II - Diesel | 2.20 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883479A3 | N/A |
| Bravo II - Diesel | 2.00 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883473A3 | N/A |
| Bravo II - Diesel | 1.81 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883476A3 | N/A |
| Bravo II - Diesel | 1.65 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883473A3 | N/A |
| Bravo II - Diesel | 1.50 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883476A3 | N/A |
| Bravo II X | 2.20 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887909A1 | N/A |
| Bravo II X | 2.00 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887903A1 | N/A |
| Bravo II X | 1.81 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887906A1 | N/A |
| Bravo II X | 1.65 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887903A1 | N/A |
| Bravo II X | 1.50 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887906A1 | N/A |
| Bravo III | 2.43 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(3) | 43-883479A3 | 43-803109T2 |
| Bravo III | 2.43 | 2000 - 2004 | 0M100001- 0W249999 | N.S.S. | 43-883479A2 | N/A |
| Bravo III | 2.43 | 2004 - 2023 | 0W250000 and up | N.S.S. | 43-8M0060005 | N/A |
| Bravo III | 2.20 | 1988 - 1995 | 0B664190 - 0F729999 | N.L.A.(2) | 43-883479A4 | 43-803109T2 |
| Bravo III | 2.20 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(3) | 43-883479A3 | 43-803109T2 |
| Bravo III | 2.20 | 2000 - 2004 | 0M100001- 0W249999 | N.S.S. | 43-883479A2 | N/A |
| Bravo III | 2.20 | 2004 - 2023 | 0W250000 and up | N.S.S. | 43-8M0060005 | N/A |
| Bravo III | 2.00 | 1988 - 1995 | 0B664190 - 0F729999 | N.L.A.(4) | 43-883473A4 | 43-803107T2 |
| Bravo III | 2.00 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(5) | 43-883473A3 | 43-803107T2 |
| Bravo III | 2.00 | 2000 - 2004 | 0M100001- 0W249999 | N.S.S. | 43-883473A2 | N/A |
| Bravo III | 2.00 | 2004 - 2023 | 0W250000 and up | N.S.S. | 43-8M0060003 | N/A |
| Bravo III | 1.81 | 1988 - 1995 | 0B664190 - 0F729999 | N.L.A.(6) | 43-883476A4 | 43-803108T2 |
| Bravo III | 1.81 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(7) | 43-883476A3 | 43-803108T2 |
| Bravo III | 1.81 | 2000 - 2004 | 0M100001- 0W249999 | N.S.S. | 43-883476A2 | N/A |
| Bravo III | 1.81 | 2004 - 2023 | 0W250000 and up | N.S.S. | 43-8M0060004 | N/A |
| Bravo III | 1.65 | 1988 - 1995 | 0B664190 - 0F729999 | N.L.A.(4) | 43-883473A4 | 43-803107T2 |
| Bravo III | 1.65 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(5) | 43-883473A3 | 43-803107T2 |
| Bravo III | 1.65 | 2000 - 2004 | 0M100001- 0W249999 | N.S.S. | 43-883473A2 | N/A |
| Bravo III | 1.65 | 2004 - 2023 | 0W250000 and up | N.S.S. | 43-8M0060003 | N/A |
| Bravo III | 1.50 | 1988 - 1995 | 0B664190 - 0F729999 | N.L.A.(4) | 43-883473A4 | 43-803107T2 |
| Bravo III | 1.50 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(5) | 43-883473A3 | 43-803107T2 |
| Bravo III | 1.50 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-883473A2 | N/A |
| Bravo III | 1.36 | 1996 - 1999 | 0F730000 - 0M100000 | N.L.A.(7) | 43-883476A3 | 43-803108T2 |
| Bravo III | 1.36 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-883476A2 | N/A |
| Bravo III - Diesel | 2.43 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883479A3 | N/A |
| Bravo III - Diesel | 2.20 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883479A3 | N/A |
| Bravo III - Diesel | 2.00 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883473A3 | N/A |
| Bravo III - Diesel | 1.81 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883476A3 | N/A |
| Bravo III - Diesel | 1.65 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883473A3 | N/A |
| Bravo III - Diesel | 1.50 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883473A3 | N/A |
| Bravo III - Diesel | 1.36 | 1996 - 1999 | 0F730000 - 0M100000 | N.S.S. | 43-883476A3 | N/A |
| Bravo III X | 2.43 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887909A1 | N/A |
| Bravo III X | 2.20 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887909A1 | N/A |
| Bravo III X | 2.00 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887903A1 | N/A |
| Bravo III X | 1.81 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887906A1 | N/A |
| Bravo III X | 1.65 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887903A1 | N/A |
| Bravo III X | 1.50 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887903A1 | N/A |
| Bravo III X | 1.36 | 2000 - 2023 | 0M100001 and up | N.S.S. | 43-887906A1 | N/A |
| Blackhawk | 1.65 | 1994 | 0F186717 - 0F392505 | N.L.A.(2) | 43-883479A4 | N/A |
| Blackhawk | 1.65 | 1994 - 2023 | 0F392506 and up | N.L.A.(5) | 43-883473A4 | N/A |
| Blackhawk | 1.50 | 1994 - 2023 | 0F186717 and up | N.L.A.(5) | 43-883473A4 | N/A |
| Blackhawk | 1.36 | 1994 - 2023 | 0F186717 and up | N.L.A.(6) | 43-883476A4 | N/A |
| III | 1.50 | 1968 - 1972 | 2373127 - 3002613 | N.S.S. | N.L.A. | N/A |
| III | 2.00 | 1968 - 1972 | 2373127 - 3002613 | N.S.S. | N.L.A. | N/A |
| TR/TRS | 1973 - 1993 | 3377316 and up | N.L.A. | N.L.A. | N/A | |
| N.S.S. = Not sold separately | ||||||
| N.L.A. = No Longer Available | ||||||
| (1)Some early 1.5 units with cone 89449 & cup 89410 must order an additional bearing # 31-35990A1 | ||||||
| (2)Order gear kit 43-883479A4 | ||||||
| (3)Order gear kit 43-883479A3 | ||||||
| (4)Order gear kit 43-883473A4 | ||||||
| (5)Order gear kit 43-883473A3 | ||||||
| (6)Order gear kit 43-883476A4 | ||||||
| (7)Order gear kit 43-883476A3 | ||||||