Alpha 1 & Gen. 2 Outdrive Parts *Drawings *Videos

T.C. Electronics / Marine ( 416 ) 751-7326 home page

Mercruiser Alpha 1 upper gearcase and gear ratio

GLM Marine aftermarket outdrive upper gearcase housing and parts

  • Replacement complete upper drive shaft housing for Mercruiser 1/R/MR/ Alpha one outdrive years 1970 to 1990 *No core required
  • Includes long yoke (drive shaft), U-joint and socket
  • See our upper gearcase drawing page for photos and a list of all the internal parts and components included
  • Serial #6225577 and up
  • All gear ratios are available, refer to application chart below.
  • Tech support exploded view drawings

GLM #

OEM #

Ratio

Engine

 
19100
1547-9421A20
1.50/1.47 (20/22)
MOST V8 UNDER 300 HP
$1195.29

19200
1547-9421A21
1.65/1.62 (24/24)
6 CYLINDER INLINE
$1195.29

19300
1547-9421A22
1.84/1.81 (17/19)
V6 & 470/485
$1195.29

19400
1547-9421A23
1.98/1.94 (20/24)
4 CYLINDER INLINE
$1195.29

19500
1547-9421A19
1.32/1.30 (16/20)
V8
$1195.29