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Twin Disc MG-509 Marine Transmission Parts

Diesel Parts Direct is an Authorized Twin Disc Dealer and carries a great selection of genuine parts for MG-509 DC (deep case) and MG-509 SC (short case) marine transmissions. We stock most popular products like clutch plates, oil pumps, rubber blocks, and bearing kits and have them ready for immediate shipment.


FRONT SEAL

  • $48.28
    • $48.28
    Qty: 

    GASKET

  • $8.11
    • $8.11
    Qty: 

    GASKET

    PART RECOMMENDED WHEN CHANGING PUMP

  • $4.89
    • $4.89
    Qty: 

    GASKET

  • $5.75
    • $5.75
    Qty: 

    O-RING

    PART RECOMMENDED WHEN CHANGING REAR SEALS

  • $16.89
    • $16.89
    Qty: 

    O-RING

  • $12.47
    • $12.47
    Qty: 

    REAR SEAL

  • $32.62
    • $32.62
    Qty: 

    REAR SEAL

  • $50.97
    • $50.97
    Qty: 

    RUBBER BLOCK

  • $6.65
    • $6.65
    Qty: 

    SCREEN ELEMENT FILTER

  • $164.69
    • $164.69
    Qty: 

    SELECTOR VALVE GASKET

  • $7.51
    • $7.51
    Qty: 

    TOP COVER GASKET

  • $13.24
    • $13.24
    Qty: 

    BEARING KIT

  • $2,189.20
    • $2,189.20
    Qty: 

    BEARING KIT

  • $1,999.48
    • $1,999.48
    Qty: 

    GASKET AND SEAL KIT

  • $1,058.05
    • $1,058.05
    Qty: 

    GASKET AND SEAL KIT

  • $1,179.38
    • $1,179.38
    Qty: 

    OIL PUMP

  • $1,159.20
    • $1,159.20
    Qty: 

    SELECTOR VALVE - MG509

  • $1,701.23
    • $1,701.23
    Qty: 

    CLUTCH PLATE (DRIVING)

  • $32.33
    • $32.33
    Qty: 

    CLUTCH PLATE (DRIVING)

  • $40.49
    • $40.49
    Qty: 

    CLUTCH PLATE (DRIVEN, STEEL)

  • $39.76
    • $39.76
    Qty: 

    CLUTCH PLATE (STEEL)

  • $22.47
    • $22.47
    Qty: 

    OVERHAUL PLATE KIT

  • $1,292.30
    • $1,292.30
    Qty: 

    CLUTCH SPIDER

  • $1,650.87
    • $1,650.87
    Qty: 

    DIPSTICK

  • $52.93
    • $52.93
    Qty: 

    DIPSTICK

  • $47.91
    • $47.91
    Qty: 

    DIPSTICK TUBE

  • $102.19
    • $102.19
    Qty: 

    DRIVE RING (BOLTS TO FLYWHEEL, 14")

  • $755.71
    • $755.71
    Qty: 

    DRIVE SPIDER (INPUT, 14")

  • $4,023.70
    • $4,023.70
    Qty: 

    HUB AND BACK PLATE

  • $1,783.47
    • $1,783.47
    Qty: 

    LATHE CUT RING

    PART RECOMMENDED WHEN CHANGING FRONT SEAL

  • $10.47
    • $10.47
    Qty: 

    LATHE CUT RING

    PART RECOMMENDED WHEN CHANGING REAR SEALS

  • $8.47
    • $8.47
    Qty: 

    OUTPUT FLANGE

  • $2,585.47
    • $2,585.47
    Qty: 

    OUTPUT FLANGE

  • $2,014.22
    • $2,014.22
    Qty: 

    PRESSURE HOSE

  • $101.23
    • $101.23
    Qty: 

    BREATHER

  • $170.96
    • $170.96
    Qty: 

    HEAT EXCHANGER

  • $1,686.63
    • $1,686.63
    Qty: 
    Hundreds Of Items Guaranteed in Stock
    Hundreds Of Items Guaranteed in Stock Click here for details

    REGISTER AND SAVE $10 OFF YOUR PURCHASE OF $100 OR MORE
    Use code DPD10
    Click here for details

    Everyday Free Ground Shipping on Select Overhaul Kits and Turbos
    Everyday Free Ground Shipping on Select Overhaul Kits and Turbos Click here for details

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