Complete Mercruiser upper gearcase housing

Mercruiser outdrive parts drawing *Videos *SEI sterndrive

Complete Mercruiser upper gearcase housing

Complete GLM Marine Upper Gearcase 120/140, 470, 165 and V8 Outdrive Motors

New replacement housing assembly from GLM Marine aftermarket parts P/N 18100
Replaces OEM 1547-9421A20, 1547-9412A21, 1547-9412A22, 1547-9412A23 and 1547-9412A19
Gearcase contains gears, shafts, and all other internal parts including universal joints and drive shaft
For an empty GLM aftermarket MerCruiser upper gear housing, see our upper gear housing page
Tech support Exploded view drawings
Search by part number or description here

19000 upper gearcase

P/N 19100 Most V8 motors under 300 hp 1.50/1.47 ratio (20/22) OEM 1547-9421A20 $1099.99

P/N 19200 6 cylinder inline 165 hp 1.65/1.62 ratio (24/24) OEM 1547-9412A21 $1099.99

P/N 19300 470/485 and 4.3L V6 1.84/1.81 ratio (20/22) OEM 1547-9412A22 $1099.99

P/N 19400 120/140 hp 4 cylinder inline 1.98/1.94 ratio (20/24) OEM 1547-9421A20 $1099.99