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Mercruiser Alpha 1 outdrive replacement
New and rebuilt sterndrives for 4 Cylinder, V6 and V8
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- Aftermarket replacement gearcases with full 2 year warranties
- Compatible with 1970 - present models
- Mercruiser,
MR, Alpha 1 and Gen 2 models
- All gear ratios available for all motors, 4 cylinder, V6 and V8
- No core charge
required on all outdrives
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Replacement Lower Units
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Description
OEM #
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Price
USD
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Price
Canadian
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Aftermarket Mercruiser Lower Unit
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P/N 18100 New lower unit assembly for all ratios and motors, up to 300 hp. 2 year warranty
(1970 - 1990, MC-1, R/MR and Alpha One, serial numbers 2791957 - 0A545003)
1623-8951A43
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$1399.95
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$1846.95
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18300 Alpha One Gen 2 Outdrive
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P/N 18300 Lower gearcase assembly for Alpha 1 Generation 2 models, up to 300 hp. 2 year warranty
(1991 - present, serial numbers 0A545004 - up)
1623-8951A43
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$1549.95
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$1999.95
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Upper Gear Housings
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Description
OEM #
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Price
(USD)
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Price
(Canadian)
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19600 Upper Gear Housing
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Complete upper gearcase housing assembly with drive shaft - ready to bolt onto the lower unit. All ratios available for
1991 and up, serial numbers 0A545004 and up
1547-861063A6, 1547-861063A12, 1547-861063A10, 1547-861063A8
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$1399.00
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$1748.00
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19100 Drive Shaft Assembly
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Complete upper gearcase with drive shaft and u-joints. All ratios available for
1970 - 1990, serial numbers
2791957 - 0A545003
1547-9412A20, 1547-9412A21, 1547-9412A22, 1547-9412A23, 1547-9412A19
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$1199.00
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$1498.00
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Customers also purchased:
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Price
USD
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Price
Canadian
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12110 Water pump kit
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Parts included:
12312 46-57234T1 Base
12410 46-96148T1
Housing
12510 32435-1 Wear Plate
12820 23-29804T Guide Tube
21330 25-30271 Slinger
31010 27-85608-1 Gasket
31020 27-858524 Gasket
31040 27-856704 Gasket
31170 (2) 12-19183-3 Gasket
81160 25-30613 O-ring
85140
26-45577-1 Seal
89840 47-89984T4 Impeller
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$44.95
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$54.95
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Bellows Kit
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30-803097T1
Parts included:
21905 Gimbal Bearing
85910 Oil seal
39622 Outdrive installation gasket Kit
47110
Water Hose 3/4 inch
47120 Hose 5/8 inch
89050 U-Joint tube
89080 Shift Cable tube
89100 Exhaust tube
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$145.95
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$192.95
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87500 Mercruiser upper housing gaskets
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P/N 87500 Seal kit
1964 - 1990 models
serial numbers
(1684188 - 0D469858)
26-32511A1
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$24.95
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$30.00
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87501
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P/N 87501 Alpha 1 Generation 2
upper gear housing seal / gasket kit
(1991 and
up,
S/N 0A54004 - up)
26-88397A1
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$25.95
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$33.95
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58232 GLM exhaust manifold kit 1983-2001
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P/N 58231 / 58232 Complete Mercruiser GM V8 manifold set with 3 inch or 4 inch riser.
Included
P/N 51230 Cast iron manifold assembly
860246Q11 x 2
P/N 51110 / 98504A3 or 51140
807988A2 Elbow - riser (3 inch or 4 inch) x 2
P/N 31100 Gasket 27-33395 x 2
P/N 30240 Gasket 27-863724
x 2
P/N 13991 90 degree hose fitting 22-806926 x 2
P/N 13992 Drain plug 22-806608A02 x 2
P/N
80140 O-ring for plug 25-45253 x 2
P/N 22391 Stud 16-49545 x 8
P/N 21248 Locknut 11-46335 x 8
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$599 US
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$791 CDN
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51110 Elbow cast iron 3 inch
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P/N 51110 Elbow with mounting gasket - 3 inch 15 degree at hose connection / 98504A3
Model, CID, Year and Serial number for small block GM engines
185 229 V6 1985-1986 6330183-6919655 (4bbl)
185 262 V6 1985-1986 0A331455-0B527954 (2bbl)
205 262 V6 1985-1986 S/N 0A331455-0B527954
200
305 V8 1985-1987 S/N 6899058-0B525981
228 305 V8 1983-1995 S/N 6218462-0F600999
230 305 V8 1985-1987
S/N 6899269-0B525981
898 305 V8 1983-1984 S/N 6218462-68990571
260 350 V8 1983-1987 S/N 6218462-0B773304
260 350 V8 1981-1987 S/N 5907058-0F024999
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$147 US
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$194 CDN
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21450 Mercruiser Outdrive Part 865436A03
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21450 Parts that are included:
21080 Mercruiser slide
21090 Set screw
21140 Shift cable arm
21430
Guide
21433 Set screw
21462 Shift wire wrapping
21463 Insert
21464 Wire
21432 Anchor
21710 Cable
89080 Bellow
21750 Set Screw
21790 Bellow clip
21791 Hose clamp
39622 Gasket kit
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$89.95 USD
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$118.95 Canadian
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