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Mercury 1643-7406A31 Outboard Gearcase Lower Unit Long shaft 50hp 60hp 70hp 3cyl

Mercury 1643-7406A31 Outboard Gearcase Lower Unit Long shaft 50hp 60hp 70hp 3cyl
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Mercury 1643-7406A31 Outboard Gearcase Lower Unit Long shaft 50hp 60hp 70hp 3cyl Mercury 1643-7406A31 Outboard Gearcase Lower Unit Long shaft 50hp 60hp 70hp 3cyl Mercury 1643-7406A31 Outboard Gearcase Lower Unit Long shaft 50hp 60hp 70hp 3cyl Mercury 1643-7406A31 Outboard Gearcase Lower Unit Long shaft 50hp 60hp 70hp 3cyl Mercury 1643-7406A31 Outboard Gearcase Lower Unit Long shaft 50hp 60hp 70hp 3cyl Mercury 1643-7406A31 Outboard Gearcase Lower Unit Long shaft 50hp 60hp 70hp 3cyl Mercury 1643-7406A31 Outboard Gearcase Lower Unit Long shaft 50hp 60hp 70hp 3cyl Mercury 1643-7406A31 Outboard Gearcase Lower Unit Long shaft 50hp 60hp 70hp 3cyl Mercury 1643-7406A31 Outboard Gearcase Lower Unit Long shaft 50hp 60hp 70hp 3cyl Mercury 1643-7406A31 Outboard Gearcase Lower Unit Long shaft 50hp 60hp 70hp 3cyl Mercury 1643-7406A31 Outboard Gearcase Lower Unit Long shaft 50hp 60hp 70hp 3cyl Mercury 1643-7406A31 Outboard Gearcase Lower Unit Long shaft 50hp 60hp 70hp 3cyl
$ 330.00
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Removed from a  Mercury Outboard 50hp - Inline 3 Cyl. cylinder Two 2-Stroke (6428681-0B122929) 

  • Part #'s
    • Lower Gearcase Assembly 1643-7406A31 (Housing Stamped 1643-6458)
      • Functionally Equivalent to the Following Numbers:
        • 1643-9539A3
        • 1643-7406A42 (Mariner)
        • 1643-9539A9 (Mariner)
      • Related Gearcase numbers (Not related to shaft length)
        • 1643-7406A16 / 1643-7406A41 / 1643-9539A1 / 1643-9539T1 / 1643-9539A8 / 1643-9539T8
  • Compatibility
    • Generally found on the 3cyl  2-stroke 50hp / 60hp / 70hp Mercury & Mariner Outboards from the 1984-1990
    • Make sure yours looks just like this.
  • Item Condition and Notes:
    • Good Working Condition
    • Shaft Measures Roughly 21-3/4" From the top of the Water Pump housing to the tip of the drive shaft..... (See Pictures)
    • This is the long shaft model.... Please measure yours to ensure you are ordering the right one.
    • Shifts Correctly
    • Original Paint
    • Pressure Tested
  • Yours should look like this one.
  • Please ask if you are unsure if this part will work for you. Please send model and serial number.
  • You will receive what is in the pictures.
  • Please inspect pictures closely for condition.
  • Purchase with confidence!

Please contact me with any additional questions.

  • Other Related Models: 
    • This item may work on these other Outboards models please do your research or ask for help.
    • May Work On These Years: 1984, 1985, 1986, 1987, 1988, 1989, 1990  (and possibly others)
    • May Work on These Horsepowers 50hp 60hp 70hp (and possibly others)
    • Mercury, Mariner, Tracker, Sea Ray, Force

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