Sierra Marine Parts Catalog
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REVERSE GEAR
Replaces: 43-92320T
For: “R” drive (28 teeth)
LOWER UNIT GEAR SET
Replaces: 43-96084A4
888 S/N 3106717 & UP #1 Units S/N 3469428 & UP Except, MR/AL-
PHA Units (which have no pre-load pin in the top of the drive shaft).
REVERSE GEAR
Replaces: 43-828073A1
For: Alpha I/Gen II lower S/N D469859 & UP
LOWER UNIT GEAR SET
Replaces: 43-878087A2 + 43-828073A1,
43-828072A2
For: All MR/ALPHA/Gen II
(Except Gen II 2.00-2.40 ratios)
FORWARD GEAR SET
Replaces: 43-878087A2
For: MR/Alpha/Gen II lower S/N D469859 & UP
FORWARD GEAR SET
Replaces: 43-96084A7
For: “R” drive
PINION & FORWARD GEAR SET
Replaces: 43-828072A3
13-21 Teeth
SPLINE GREASE
14 oz.
Replaces: 92-816391A4
Specialty grease used in the assembly of engine
yokes and couplers
ENGINE ALIGNMENT TOOL
Replaces: 91-57797A3
For use with all #1 units
SPANNER NUT WRENCH
Replaces: 91-36235
I/O—MERCRUISER-DriveSystem