New and remanufactured lower units for Mercury/Mariner 3-cylinder 70-90 horsepower (3 jaw and 6 jaw) engines manufactured from 1987 to 2006. Includes break-in instructions. Carries a full one year warranty.
NOTE: Updating from a 1987-1997 3 Jaw unit to a newer 6 Jaw requires changing the shift rod.
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