-40%
1643 9539A9 Mercury Outboard Lower Unit Gearcase Assembly 20
1643 9539A9 Mercury Outboard Lower Unit Gearcase Assembly 20
1643 9539A9 Mercury Outboard Lower Unit Gearcase Assembly 20
1643 9539A9 Mercury Outboard Lower Unit Gearcase Assembly 20
1643 9539A9 Mercury Outboard Lower Unit Gearcase Assembly 20
1643 9539A9 Mercury Outboard Lower Unit Gearcase Assembly 20
1643 9539A9 Mercury Outboard Lower Unit Gearcase Assembly 20
1643 9539A9 Mercury Outboard Lower Unit Gearcase Assembly 20
1643 9539A9 Mercury Outboard Lower Unit Gearcase Assembly 20
1643 9539A9 Mercury Outboard Lower Unit Gearcase Assembly 20
1643 9539A9 Mercury Outboard Lower Unit Gearcase Assembly 20
1643 9539A9 Mercury Outboard Lower Unit Gearcase Assembly 20

1643 9539A9 Mercury Outboard Lower Unit Gearcase Assembly 20" 50-70 HP 1980-1990

$ 448.8

Availability: 88 in stock
  • Condition: TESTED--SHIFTS CORRECTLY! Some chips on the Skeg. Cavitation Plate looks good, with Trim Tab intact. 13-Teeth Propeller Shaft with Tabbed and Thrust Washers and Prop Nut. 11-Teeth Driveshaft with straight shaft--No Twisting! From a Low Hour Freshwater Mercury Mariner 1988 60HP 3-Cylinder 2-Stroke 60ELPTO Model No. 0B239899. FREE BOX CRATED SHIPPING Only Ships to the Lower 48 USA States.
  • Color: Gray
  • FITS Various Mercury & Mariner Outboards: Model Years 1980-1990 (may fit others)
  • FREE BOX-CRATED SHIPPING: To any of the Lower 48 USA States ONLY
  • MICHIGAN FRESHWATER MARINE: CUSTOMER SERVICE (616) 682-1560
  • Manufacturer Part Number: 1643-9539A9 (9539A9, 7406A42
  • Country/Region of Manufacture: United States
  • 13-Teeth Propeller Shaft Spline: With Tabbed and Thrust Washers & Prop Nut
  • Engine(HP): 50/60/70 HP
  • Driveshaft Measures 22-14": From Mating Surface to Tip of Driveshaft
  • Skeg has some chipping: No Cracks or breaks (See close-up Photos)
  • Gearcase Housing Casting Number: 1643-9539-C
  • Cavitation Plate in Good Condition: No Cracks Chips or Breaks. Trim Tab intact and good shape
  • Stroke: 2-Stroke
  • Shaft Length: Standard 20-inch Long Shaft Model
  • 11-Teeth Driveshaft Spline: Straight Driveshaft with No Twists!
  • FITMENT Various Horsepower: 50, 60 and 70 HP Models
  • TESTED Shifts Correctly: Shifts smoothly thru Forward, Neutral & Reverse
  • Brand: Mercury-Mariner Outboards
  • MFM RETURN POLICY (For ALL Returns, Regardless of Reason): Buyer to Pay Return Shipping Costs and a 20% Return Fee

    Description

    MICHIGAN FRESHWATER MARINE
    High Quality
    Previously-Owned
    Boat Parts
    From Freshwater Boats
    --No Salt Corrosion!
    Mercury Mariner Outboard Lower Unit Complete Gearcase Assembly
    1643-9539A9 (9539A9) Interchanges with Part No. 7406A42
    TESTED GOOD--Shifts Correctly through Forward, Neutral and Reverse
    20-inch Standard Long Shaft Model (For Boats with a Transom Length of approx. 20 inches)
    Some chip wear on skeg (please see close-up photos)
    Some paint wear from use
    11-Teeth Spline Driveshaft
    Driveshaft is straight with no twisting!
    Driveshaft measures 22-1/4" from top of Lower Unit mating surface to Tip of Driveshaft
    13-Teeth Spline Propeller Shaft
    Includes Tabbed and Thrust Washers and Prop Nut
    Casting Number: 1643-9539-C
    Color:  Mercury Gray
    As required for shipping, the Gear Oil was drained and inspected. Fluids were found to be free of metal shavings, foam, water or any other contaminants. Buyer MUST replenish the Gear Oil prior to placing this unit back into service. As with all previously owned Lower Units, we also recommend replacing the water pump impeller before use.
    FREE SHIPPING IN A CUSTOM-BUILT WOODEN BOX CRATE
    WE SHIP DAILY!  This item
    Ships ONLY to the Lower 48 USA States
    FITMENT:
    Will fit various Models, 50, 60, and 70 HP, Years 1980-1990 (may fit others).
    To confirm fitment, please eBay Message us your Motor Model and Serial Number.
    MFM RETURN POLICY (For ALL Returns, Regardless of Reason):
    By purchasing this item, Buyer confirms agreement with this Policy
    MFM Accepts Pre-Authorized Returns
    Buyer to pay Return Shipping Costs and a 20% Return Fee
    INV# 2260