Mercruiser Alpha One V8 Rebuild Kit *Upper gearcase

GM V8 260 outdrive upper rebuild kit with gears, bearings Alpha One and Gen 2

Last updated on 11/10/2023

For MerCruiser, Alpha 1 and Alpha 1 Gen 2 models
Includes upper housing gears, seals, shims and bearings.
Compatible with 225, 898, 260 and Alpha drives
1.50 and 1.47 ratio (20/22 teeth)
Kits include large bearing assembly with spacer.
Complete MerCruiser Alpha 1 upper gearcases also available

Mercruiser 898 / 228 / 260 and Alpha 1, 1977-1990 (serial numbers 4782330-0D460000)

Price
(USD)

Price
(Canadian)

P/N 11215

Parts included:

11210 Gear Set
87500 Seal Kit
39622 Outdrive Kit
21560 Bearing
21520 Bearing assembly and spacer
21510 Top cover bearing
23260 Shim
23270 Shim
23280 Shim

$616.99

$ 757.89

Alpha 1 Gen 2, 1991-1997 (serial numbers 0D469859-0K999999)

Price
(USD)

Price
(Canadian)

P/N 11216

Parts included:

11210 Gear Set
21510 Top cover bearing
21511 Top cover bearing
21520 Double bearing assembly
21560 Bearing
23260 Shim
23261 Shim
23280 Shim
39622 Gasket kit
87501 Seal Kit

$599.96

$ 757.89

Alpha 1 Gen 2, 1998 and up
(serial numbers OL000040-Up)

Price
(USD)

Price
(Canadian)

P/N 11217

Parts included:

11214 Gear set
21511 Bearing, top cover
21522 Bearing assembly
21560 Tapered bearing
23261 Shim
23270 Shim
23280 Shim
39622 Outdrive gasket
87501 Seal kit

$699.96

$ 581.89

Recommended compounds for installation

Price
(USD)

Price
(Canadian)

508235 OMC Johnson Compound

P/N 508235 Gasket sealing compound. This sealant is used on the o-rings and gaskets when re-sealing the outdrive.

$24.95

$32.89

609 Loctite

P/N 609 609 Loctite for oil seals. Low viscosity and fast drying. Small tube is enough for re-sealing a complete stern drive. Adds 3000 psi of holding power.

$9.95

$12.89

Parts included in rebuild kits (see list of parts beside each kit above)

11210

P/N 11210 Upper housing gear set, 20/22 ratio 1.50 43-18411A2. Included in kit P/N 11215 and P/N 11216 for 1977 – 1997 Mercruiser and Alpha 1, Alpha 1 Gen 2 models, serial numbers 4782330-OL000000.

$467.96

$ 598.89

11214 gear set

P/N 11214 Upper housing gear set, 20/22 ratio 1.47 43-18411A2. Included in kit P/N 11217, for Alpha 1 Gen 2 models 1998 and up, serial numbers OL000040-Up.

$534.96

$ 453.89

drive shaft housing bearings

P/N 21520 Upper gear case double bearing assembly with spacer 31-35988A2. Included in kit P/N 11215 and P/N 11216 for 1977 – 1997 Mercruiser and Alpha 1, Alpha 1 Gen 2 models, serial numbers 4782330-OL000000.

$123.96

$ 375.89

Roller bearing assembly with spacer

P/N 21522 Roller bearing assembly with spacer 31-30894A5. Included in kit P/N 11217, for Alpha 1 Gen 2 models 1998 and up, serial numbers OL000040-Up.

$128.96

$ 167.89

21560

P/N 21560 Driven gear tapered bearing 31-32573A1. Included in kits 11215, 11216 and 11217.

$42.96

$ 68.89

top cover bearing 31-32575T1

P/N 21511 Top cover bearing, 1-25/32 O.D. 31-32575T1. Included in kit 11216 and 11217.

$8.96

$ 15.89

top cover bearing 31-61100A1

P/N 21510 Top cover bearing, 1-15/16 O.D. 31-61100A1. Included in kit 11215.

$30.96

$ 47.89

87500 sterndrive seal kit

P/N 87500 Upper gearcase seal kit for Mercruiser and Alpha 1, up to 1990 for serial numbers 2062141-0D469000. 26-32511A1. Included in kit 11215.

$24.96

$ 30.89

87501

P/N 87501 Upper gearcase seal kit for Alpha 1 Generation 2 models, years 1991 and newer for serial numbers 0D469859-up. 26-88397A1. Included in kit 11216 and 11217.

$26.96

$ 43.89

drive gear shim

P/N 23280 Double bearing shims, for all models 1970 and up, all serial numbers. 15-35980A1. Included in kits 11215, 11216 and 11217.

$11.96

$ 27.89

23270 shims

P/N 23270 Lower bearing shims, for all models 1970 and up, all serial numbers. 15-36178A1. Included in kits 11215, 11216 and 11217.

$9.96

$13.89

23261

P/N 23261 Top cover bearing shims, for bearing 21511 with 1-25/32 O.D. for Gen 2 models 1996 and up serial numbers 0F680000-up. Included in kits 11216 and 11217.

$6.96

$ 16.89

23260

P/N 23260 Top cover bearing shims, for bearing 21510 with 1-15/16 O.D. for Mercruiser and Alpha 1 models 1970-1995 serial numbers 3213658-0F679999. 31-61100A1. Included in kit 11215.

$8.96

$ 18.89

Bell housing gasket

P/N 39622 Bell housing outdrive installation gasket kit. Used between the upper gearcase and bell housing. Includes 2 o-rings for end of input shaft and exhaust area seal. 27-94996T2. Included in kits 11215, 11216 and 11217.