Mercruiser Outdrive Parts Drawings *How to Videos

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Mercruiser lower unit / Upper gearcases

New / used replacement upper drive shaft housings
and lower units outdrive

  • Complete outdrives and upper / lower housings for Mercruiser 1, R, MR and Alpha 1 models
  • New and used sterndrives for 4 cylinder, 6 cylinder V6 and V8 engines. For used models please contact us for availability.
  • Includes drive shaft yoke, u-joints, trim tab and mounting gaskets
  • Tech support Exploded view outdrive drawings
  • Vertical drive shaft does not have pre-load pin at top and is not required on replacement

19100 Upper gearcase assembly V8 OEM 1547-9421A20

19100 Upper gearcase assembly V8 OEM 1547-9421A20

P/N 19100 Most V8 motors under 300 hp. * Includes drive shaft assembly-universal joints and socket For Mercruiser 1 / R / MR / Alpha 1 (1971 - 1990) 888 / 898 / 228 / 260 V8 gear ratio 1.50 / 1.47 Tooth count (20 / 22) OEM 1547-9421A20 $1357.95

P/N 19200 6 cylinder inline

P/N 19200 6 cylinder inline

P/N 19200 6 cylinder inline 165 hp. .65/1.62 ratio (24/24) EM 1547-9412A21 $1357.95

Upper gearcase

Upper gearcase

P/N 19300 470/485 and 4.3 Liter V6 1.84/1.81 ratio (20/22) OEM 1547-9412A22 $1375.95

Assembly

Assembly

P/N 19400 120/140 hp. 4 cylinder inline 1.98/1.94 ratio (20/24) OEM 1547-9421A20 $1375.95

Complete

Complete

P/N 20100 GLM Complete out-drive OEM 5-01471017 / 5-01622017 / 5-01811017/ 5-01941017 $2254.95

*Note: Upper gear-case tooth count of 20 / 22 and lower unit are shipped in separate boxes due to weight.

Includes drive shaft assembly with u-joints, trim tab, gaskets, o rings and all mounting hardware.

For Mercruiser 1 / R / MR / Alpha 1 (1971 - 1990)
888 / 898 / 228 / 260 V8 engines 1.50 / 1.47 ratio models up to 300 hp.

18100 Lower unit OEM 1623-8951A43

18100 Lower unit OEM 1623-8951A43

P/N 18100 New GLM Marine lower unit
OEM 1623-8951A43 $1499.95

For Mercruiser 1 / R / MR / Alpha 1
(1970 - 1990) 120/140 4 cylinder
470/485
160/165 6 cylinder
All V8 up to 300 hp.