Sierra Marine Parts Catalog: Gear Housing Assemblies, Upper Gear Cases
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COMPLETE
UPPER GEAR CASE
Replaces: 1547-9412A21
1.65:1/1.62:1
COMPLETE
UPPER GEAR CASE
Replaces: 1547-9412A22
1.84:1/1.81:1
COMPLETE
UPPER GEAR CASE
Replaces: 1547-861063A10
For: Alpha Gen II (1991 & UP) for gear ratios 1.62:1,
1.65:1, 2.0:1.
Used with: 18-2411 Drive Shaft Housing Assembly
GEAR HOUSING ASSEMBLY
Replaces: 1623-815822A36
For: Ratios 1.47, 1.62
Gen II (1998 & up), (0L100040 & up)
Used with: 18-2400 Complete Lower Gear Case
COMPLETE
UPPER GEAR CASE
Replaces: 1547-861063A12
For: Alpha Gen II (1991 & UP) for gear ratios 1.47:1, 1.50:1.
Used with 18-2411 Drive Shaft Housing Assembly
COMPLETE
UPPER GEAR CASE
Replaces: 1547-861063A8
For: Gen II (1991 & UP) for gear ratios 1.81:1, 1.84:1.
Used with: 18-2411 Drive Shaft Housing Assembly
COMPLETE
UPPER GEAR CASE
Replaces: 1547-861063A6
For: Alpha Gen II (1991 & UP) for gear ratios 1.98:1 and 2.40:1
Used with: 18-2411 Drive Shaft Housing Assembly
COMPLETE UPPER GEAR CASE
Replaces: 1547-9412A20
1.5:1/1.47:1
I/O—MERCRUISER-DriveSystem
COMPLETE
UPPER GEAR CASE
Replaces: 1547-9412A23
1.98:1/1.94:1
COMPLETE
LOWER GEAR CASE
Replaces: 1623-8951A43
For: R/MR/ALPHA