Mercruiser outdrive parts | Alpha one lower unit repairs

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Mercruiser Alpha One Outdrive Replacement

New and rebuilt sterndrives for 4 Cylinder, V6 and V8

  • GLM Marine 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

Replacement Lower Units

Description
OEM #

Price
(USD)

Price
(Canadian)

18100 Mercruiser Lower Unit 1623-8951A43

18100 Mercruiser Lower Unit

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

$1399.95

$1846.95

18300 Alpha One Gen 2 Outdrive 1623-815822A53

18300 Alpha One Gen 2 Outdrive

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

$1431.95

$1889.95

Upper Gear Housings

Description
OEM #

Price
(USD)

Price
(Canadian)

19600 Upper Gear Housing 1547-861063A12

19600 Upper Gear Housing

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

$1399.00

Engine / Model

$1748.00

Engine / Model

19100 Drive Shaft Assembly 1547-9412A20

19100 Drive Shaft Assembly

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

$1199.00

Engine / Model

$1498.00

Engine / Model