(920) 662-7605

Used Outboard Parts & Fresh Water Sterndrive Parts

$599.99
This sale is for one rebuilt Mercruiser Upper Gear Case.

The Gear Ratio is 1.84:1 with 17 and 19 tooth gears

Drive Serial Number 0B643784

The Mercury part number for the complete assembly is 1547-9412A22.

The Mercury part number for the empty case is 1547-9412A18.  The 1.84 gear ratio set is part number 43-75325A3.

This upper unit is in good usable condition. We have totally disassembled, cleaned, and inspected it. All of the gears and bearings are original Mercury parts and all in perfect condition.

This unit pressure tested up to 15 PSI.  You will receive the exact unit you see pictured.

This upper unit is guaranteed good! It is completely returnable for 30 days after purchasing. Return charges may apply.

This upper unit is for 4.3L  6 cylinder Mercruiser Alpha Ones from 1984-1991.


Please check your part numbers to ensure a proper fit for your application.

Thank you for shopping at Green Bay Prop!






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