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70hp 75hp 85hp 115hp 135hp Possibly others
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Related: 300439 0300493
Unsure of application as searching the manuals leads me nowhere
14:27 Ratio
MerCruiser 43-878087A4 Lower Unit Gearcase Gear Set Alpha One MR 1983-1990 Lower Unit 70hp 75hp 85hp 115hp 135hpItem Details MerCruiser Sterndrive Alpha One Lower Unit Complete Gearset 43 878087A4 (Pinion, Forward, Reverse) Used in MerCruiser MR & Gen I lower units 1983 1990 These are the correct gears if your lower gearcase DOES NOT HAVE A PRELOAD PIN on top of the driveshaft ****If your gearcase HAS A PRELOAD PIN, then these are not the correct gears***** If you are looking for a 1970 1982 Gearset please contact us and we should be able to help. Pinion Gear
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