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Twin Disc MG-506-1 Marine Transmission Parts

Diesel Parts Direct is an Authorized Twin Disc Dealer and carries a great selection of genuine parts for MG-506-1 marine transmissions. We stock most popular products like clutch plates, oil pumps, rubber blocks, and bearing kits and have them ready for immediate shipment.


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If you know the correct Twin Disc part number, please enter it in the search box located in the navigation bar, or use any of our quick links below to access the most common parts available for this model.

If you do not see the parts you are looking for, please use our quote request form or call us at 888.687.0539: our knowledgeable inside sales staff will gladly assist you.

Twin Disc MG-506-1 Transmission Specifications



Available Ratios
1.50:1, 1.97:1, 2.50:1, 2.96:1
Oil Capacity
1.2 U.S. gallons (4.5L)
Oil Pump Capacity
  • 2.65 GPM at 2000 RPM
  • 2.5 GPM at 2000 RPM
Maximum Speed
3000 RPM
Other Info

FRONT SEAL

  • $21.27
    • $21.27
    Qty: 

    GASKET

    PART RECOMMENDED WHEN CHANGING SCREEN

  • $3.13
    • $3.13
    Qty: 

    GASKET

    PART RECOMMENDED WHEN CHANGING PUMP

  • $7.36
    • $7.36
    Qty: 

    HOUSING COVER GASKET

  • $16.25
    • $16.25
    Qty: 

    HOUSING COVER GASKET

  • $32.07
    • $32.07
    Qty: 

    REAR SEAL

  • $40.32
    • $40.32
    Qty: 

    REAR SEAL

  • $26.80
    • $26.80
    Qty: 

    RUBBER BLOCK

  • $6.58
    • $6.58
    Qty: 

    SCREEN

  • $29.13
    • $29.13
    Qty: 

    SCREEN

  • $36.36
    • $36.36
    Qty: 

    BEARING KIT

  • $485.73
    • $485.73
    Qty: 

    BEARING KIT

  • $546.01
    • $546.01
    Qty: 

    GASKET AND SEAL SET

  • $222.87
    • $222.87
    Qty: 

    OIL PUMP

  • $668.42
    • $668.42
    Qty: 

    CLUTCH PLATE (DRIVEN, STEEL)

  • $24.04
    • $24.04
    Qty: 

    CLUTCH PLATE (DRIVING)

  • $27.89
    • $27.89
    Qty: 

    DIPSTICK

  • $19.87
    • $19.87
    Qty: 

    DIPSTICK TUBE

  • $53.07
    • $53.07
    Qty: 

    DRIVE RING (BOLTS TO FLYWHEEL, 11")

  • $544.20
    • $544.20
    Qty: 

    DRIVE SPIDER (INPUT, 11")

  • $3,220.10
    • $3,220.10
    Qty: 

    LATHE CUT RING

    PART RECOMMENDED WHEN CHANGING REAR SEALS

  • $13.78
    • $13.78
    Qty: 

    LATHE CUT RING

  • $25.75
    • $25.75
    Qty: 

    OUTPUT FLANGE

  • $661.50
    • $661.50
    Qty: 

    OUTPUT FLANGE

  • $908.51
    • $908.51
    Qty: 
    Hundreds Of Items Guaranteed in Stock
    Hundreds Of Items Guaranteed in Stock Click here for details
    Great Selection of Block Heaters and Glow Plugs

    GREAT SELECTION OF BLOCK HEATERS AND GLOW PLUGS

    Everyday Free Ground Shipping on Select Overhaul Kits and Turbos
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