Mercruiser outdrive parts *SEI Alpha 1 lower unit *Repairs

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Mercruiser Alpha One Gears V8

Outdrive upper unit heavy duty gear set for 1970 - 1997 models

  • Replaces Mercury OEM 43-18411A2, Sierra 18-2201
  • Compatible with MC-1, MR, Alpha One and Gen 2 (1970 - 1997) models
  • For upper unit models with serial numbers 3106717 - 0K999999
  • Compatible with V8 models with 1.50/1.47 ratio (20/22 teeth)
  • Includes bearing GLM P/N 21560 (OEM 31-32573A1)

11210 Mercruiser V8 20-22 Gears 43-18411A2

11210 Mercruiser V8 20-22 Gears 43-18411A2

$444.95 USD

$586.95 Canadian

Customers also purchased:

87500 Mercruiser upper housing gaskets 26-32511A1
P/N 87500 Seal kit

87500 Mercruiser upper housing seal / gasket kit (1964 - 1990 models, serial numbers 1684188 - 0D469858)

26-32511A1

$24.95

$30.00

87501 Alpha One Gen 2

P/N 87501 Upper housing seal kit (1991 and up, serial numbers 0A54004 - up)

26-88397A1

$25.95

$33.95

23280-15-35980A1

23280

P/N 23280 Shim (for horizontal driven gear)

15-35980A1

$11.95

$14.95

23270 Mercruiser Alpha 1 shim kit

23270 Mercruiser Alpha 1 shim kit

P/N 23270 Shims (for vertical gear)

15-36178A1

$9.95

$12.95

508235 OMC Johnson Compound

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

$32.95

609 Loctite

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

$12.95