Mercruiser upper gear set application chart

Cross reference chart for Mercruiser outdrive upper gears
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For other upper gear case parts, see our upper gearcase parts drawing page
For lower unit gear set applications, see lower gear set application page

11210 Mercruiser

upper housing

P/N 11210 Heavy duty upper gear set
20/22 #43-18411A2 $473.99
Includes P/N 21560 Driven roller bearing #31-32573A1

Compatible with all V8 outdrives
(1971 - 1990) and Alpha One gen ii models 1991-1997. 1.50 or 1.47 ratio lower units
Serial numbers 3106717 - 0K999999

11240 1.98 ratio 4 cylinder OEM 43-55778A3

P/N 11240 1.98 or 1.94 overall 20/24 ratio gear set #43-55778A3 $332.99
Compatible with all 4 cylinder sterndrive models, 1970 and up and generation 2 models
Serial numbers 2791957 - 0K999999

Model	Gear ratio	Year	Serial number	Upper drive gear kit	Upper gear housing service kit
120 / 140	1.98	1970-1982	2791957-6225576	11240	N / A
470 / 485	1.84	1976-1982	4208730-6225575	11230	N / A
165	1.65	1970-1981	2763442 and up	11220	N / A
888	1.50	1971-1977	3106717 and up	11210/11212	N / A
225-S	1.50	1974	3856268-4200499	11210/11212	N / A
898/228	1.50	1977-1982	4782330-6225576	11210/11212	N / A
260	1.50	1978-1982	4898730-6225576	11210/11212	N / A
R/MR/Alpha One	1.98	1983-1990	6225577 and up	11240	11245
R/MR/Alpha One	1.84	1983-1990	6225577 and up	11230	11235
R/MR/Alpha One	1.65	1983-1990	6225577 and up	11220	11225
R/MR/Alpha One	1.50 HD	1983-1990	6225577 and up	11210/11212	11215
Alpha One SS	1.50	1986-1989	OA545004 and Up	11210/11212
Alpha One Gen ll	2.40	1991-1997	OD469859-OK999999	11240	11246
Alpha One Gen 2	1.98/1.94	1991-1997	OD469859-OK999999	11240	11246
Alpha One Gen ll	1.65/1.62	1991-1997	OD469859-OK999999	11220	11226
Alpha One Gen ll	1.84/1.81	1991-1997	OD469859-OK999999	11230	11236
Alpha One Gen ll	1.50/1.47	1991-1997	OD469859-OK999999	11210/11212	11216
Alpha One Gen ll	2.40/1.94	1998 & up	OL000040 and up	11244	11247
Alpha One Generation 2	1.81	1998 and up	OL000040 and up	11233	11237
Alpha One Gen 2	2.00/1.62	1998 and up	OL000040 and up	11222	11227
Alpha One Gen ll	1.47	1998 and up	OL000040 and up	11214	11217

21950 Bellows kit 30-803097T1

P/N 21950 Transom bellows kit (1973-1990), serial numbers 3469428 - 0D469800. 30-803097T1 $145.95

Includes:
P/N 21906 Gimbal bearing
P/N 39622 bell housing gasket
P/N 47110/47120 water hoses
P/N 89050 drive shaft bellow
P/N 89080 shift cable bellow
P/N 89100 exhaust bellow
P/N 85910 oil seal

21450 Shift cable 865436A03

P/N 21450 Stern drive shift cable kit. Newer style cable with larger core wire. Compatible with 1967 - present Mercruiser and Alpha 1 models. OEM 865436A03 $89.95

Installs from the AFT end of the bell housing. Models from the mid 1960's - 1982 used cables which threaded in from behind the bell housing. You can make an easy modification to the bell housing yourself by using a 1/4-18 tap from inside of the bell housing.

87510 gasket kit

P/N 87510 Lower unit seal kit for 1967-1990 (s/n 2062141 - 0D469800) $44.99

Includes:
P/N 12830 Seal 25-39970
P/N 21330 Slinger 25-30271
P/N 81160 O-ring 25-30613
P/N 21010 bushing assembly 23-30617A2
P/N 85070 Oil seal 26-89238
P/N 81390 O-ring 25-90011
P/N 81180 O-ring 25-25439
P/N 31020 Gasket 25-858524
P/N 31050 Gasket 27-42631-1
P/N 31010 Gasket 27-85608-1
P/N 85040 Oil seal 26-16977
P/N 85700 Oil seal 26-12224
P/N 85581 Oil seal 26-816464
P/N 85140 Seal 26-45577-1

89100 Exhaust 18654A1

P/N 89100 Exhaust bellow - includes clamps and grounding clips. Replaces 18654A1 or Sierra 18-2750 $26.99

Complete repair kit

P/N 21960K *most popular For Alpha One gen ii models only, 1991 and up. Also includes bellows adhesive glue and hinge pin removal/installation $219.99

11210

P/N 11210 Outdrive upper housing gears and gear sets. Includes pinion bearing P/N 21560. For 1970-1997 models, serial numbers 3106717-0K999999. Replaces Mercury 43-18410A4 and Sierra 18-2201. $473.99