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Upper Gear Set for MC-1, Alpha One and Gen II 1.98:1 Ratio Replaces 43-55778A3 (TM2205)

Upper Gear Set for MC-1, Alpha One and Gen II 1.98:1 Ratio Replaces 43-55778A3 (TM2205)

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Upper Gear Set for Mercruiser MC1, Alpha One and Gen II Drives 1.98:1 Ratio

Replaces 43-55778A3.

This gear set is designed generally for in-line 4 cylinder powered drives including the following:

120/140 from 1970-1982 (serial numbers 27919757-6225576)

R, MR and Alpha One from 1983-1990 (serial numbers 6225577 and up)

Alpha One Gen II from 1991-1997 (serial numbers 0D469859-0K999999).

Gears have 24 teeth and 20 teeth. Please double check your current tooth count for proper replacement.

Used on drive shafts with 13 splines.
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