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  • Welcome to BayBoater Marine LLC.
Bay Boater MarineBay Boater Marine

Bay Boater Marine

  • Transmission Parts
    • Parts for Velvet Drive Marine Transmissions
    • HURTH HBW Series Mechanical Shift
    • Hurth HSW & ZF Series Hydraulic Shift Marine Transmissions
    • Hurth IRM Series 220 301 325 Models
    • Twin Disc Transmissions
  • Marine Engine Parts
    • Yamaha Outboard
    • Crusader Replacement Parts
    • Mercruiser Replacement Parts
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  • Contact
  • Account details
  • Cart / $5,400.88
      • × Gasket for HBW10 HBW150 HBW150V ZF12M ZF15M ZF15MIV Bearing Cap GasketGasket for HBW10 HBW150 HBW150V ZF12M ZF15M ZF15MIV Bearing Cap Gasket
        3 × $3.95
      • × ZFPK85L- Plate KitZFPK85L- Plate Kit
        2 × $699.00
      • × Plate Kit With Top and bottom Pressure PlatesPlate Kit With Top and bottom Pressure Plates
        1 × $109.95
      • × Seal Metal Clad, Control Valve for ZF 45, 63 and 800Seal Metal Clad, Control Valve for ZF 45, 63 and 800
        1 × $12.95
      • × Shift Plate Neutral SafetyShift Plate Neutral Safety
        1 × $79.95
      • × Bearing Kit for Velvet Drive 1017 Series 1.88, 1.91, 2.57, 2.91 RatiosBearing Kit for Velvet Drive 1017 Series 1.88, 1.91, 2.57, 2.91 Ratios
        1 × $109.95
      • × PlaceholderBearings
        1 × $0.01
      • × Oil Baffle for Velvet Drive Marine Transmissions fits 1:1 Direct Drive 1017-036-002Oil Baffle for Velvet Drive Marine Transmissions fits 1:1 Direct Drive 1017-036-002
        1 × $59.95
      • × Pump Bolt Kit 4 PiecesPump Bolt Kit 4 Pieces
        1 × $7.95
      • × Pulley Circulating Water Pump for Crusader & Mercruiser 6 Inch 2 Groove R065015Pulley Circulating Water Pump for Crusader & Mercruiser 6 Inch 2 Groove R065015
        1 × $59.95
      • × Lock Washer for Reductio Adapter 6 piecesLock Washer for Reductio Adapter 6 pieces
        1 × $5.95
      • × Gasket Seal kit with 2 Thrust WashersGasket Seal kit with 2 Thrust Washers
        1 × $79.95
      • × Bearing Kit for 71C 2.57 & 2.91 Ratio Series Velvet Drive Marine TransmissionBearing Kit for 71C 2.57 & 2.91 Ratio Series Velvet Drive Marine Transmission
        1 × $379.95
      • × Rebuild Kit for 1013 & 1014 Series Marine TransmissionsRebuild Kit for 1013 & 1014 Series Marine Transmissions
        1 × $229.95
      • × ZF 325 Plate KitZF 325 Plate Kit
        2 × $799.95
      • × Bolt Kit for Installing The Reduction Unit onto the AdapterBolt Kit for Installing The Reduction Unit onto the Adapter
        1 × $12.95
      • × PlaceholderBearings
        1 × $0.01
      • × Seal Front Pump for Velvet DriveSeal Front Pump for Velvet Drive
        1 × $6.95
      • × Super Master Rebuild Kit 1018 Series 1.52:1 OnlySuper Master Rebuild Kit 1018 Series 1.52:1 Only
        1 × $249.95
      • × VentVent
        1 × $21.95
      • × Seal Rear Output for Hurth 630 630A ZF63 ZF63ASeal Rear Output for Hurth 630 630A ZF63 ZF63A
        1 × $12.95
      • × PlaceholderSeals
        1 × $0.01
      • × Rebuild KitRebuild Kit
        1 × $249.95
      • × Twin Disc MG506 Basic Overhaul KitTwin Disc MG506 Basic Overhaul Kit
        1 × $699.95

      Subtotal: $5,400.88

      View cartCheckout

  • Checkout +
  • Cart
    • × Gasket for HBW10 HBW150 HBW150V ZF12M ZF15M ZF15MIV Bearing Cap GasketGasket for HBW10 HBW150 HBW150V ZF12M ZF15M ZF15MIV Bearing Cap Gasket
      3 × $3.95
    • × ZFPK85L- Plate KitZFPK85L- Plate Kit
      2 × $699.00
    • × Plate Kit With Top and bottom Pressure PlatesPlate Kit With Top and bottom Pressure Plates
      1 × $109.95
    • × Seal Metal Clad, Control Valve for ZF 45, 63 and 800Seal Metal Clad, Control Valve for ZF 45, 63 and 800
      1 × $12.95
    • × Shift Plate Neutral SafetyShift Plate Neutral Safety
      1 × $79.95
    • × Bearing Kit for Velvet Drive 1017 Series 1.88, 1.91, 2.57, 2.91 RatiosBearing Kit for Velvet Drive 1017 Series 1.88, 1.91, 2.57, 2.91 Ratios
      1 × $109.95
    • × PlaceholderBearings
      1 × $0.01
    • × Oil Baffle for Velvet Drive Marine Transmissions fits 1:1 Direct Drive 1017-036-002Oil Baffle for Velvet Drive Marine Transmissions fits 1:1 Direct Drive 1017-036-002
      1 × $59.95
    • × Pump Bolt Kit 4 PiecesPump Bolt Kit 4 Pieces
      1 × $7.95
    • × Pulley Circulating Water Pump for Crusader & Mercruiser 6 Inch 2 Groove R065015Pulley Circulating Water Pump for Crusader & Mercruiser 6 Inch 2 Groove R065015
      1 × $59.95
    • × Lock Washer for Reductio Adapter 6 piecesLock Washer for Reductio Adapter 6 pieces
      1 × $5.95
    • × Gasket Seal kit with 2 Thrust WashersGasket Seal kit with 2 Thrust Washers
      1 × $79.95
    • × Bearing Kit for 71C 2.57 & 2.91 Ratio Series Velvet Drive Marine TransmissionBearing Kit for 71C 2.57 & 2.91 Ratio Series Velvet Drive Marine Transmission
      1 × $379.95
    • × Rebuild Kit for 1013 & 1014 Series Marine TransmissionsRebuild Kit for 1013 & 1014 Series Marine Transmissions
      1 × $229.95
    • × ZF 325 Plate KitZF 325 Plate Kit
      2 × $799.95
    • × Bolt Kit for Installing The Reduction Unit onto the AdapterBolt Kit for Installing The Reduction Unit onto the Adapter
      1 × $12.95
    • × PlaceholderBearings
      1 × $0.01
    • × Seal Front Pump for Velvet DriveSeal Front Pump for Velvet Drive
      1 × $6.95
    • × Super Master Rebuild Kit 1018 Series 1.52:1 OnlySuper Master Rebuild Kit 1018 Series 1.52:1 Only
      1 × $249.95
    • × VentVent
      1 × $21.95
    • × Seal Rear Output for Hurth 630 630A ZF63 ZF63ASeal Rear Output for Hurth 630 630A ZF63 ZF63A
      1 × $12.95
    • × PlaceholderSeals
      1 × $0.01
    • × Rebuild KitRebuild Kit
      1 × $249.95
    • × Twin Disc MG506 Basic Overhaul KitTwin Disc MG506 Basic Overhaul Kit
      1 × $699.95

    Subtotal: $5,400.88

    View cartCheckout

 

Twin Disc

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Twin Disc 506 Plate Kit
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Twin Disc 506 Plate Kit

SKU: TDPK506
$679.95
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Twin Disc 506 Plate STEEL
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Twin Disc 506 Plate STEEL

SKU: TDP506S
$14.95
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Twin Disc 506A Plate Kit
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Twin Disc 506A Plate Kit

SKU: TDPK506A
$679.95
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Twin Disc MG506 Basic Overhaul Kit
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Twin Disc MG506 Basic Overhaul Kit

SKU: TDMOK506
$699.95
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Twin Disc MG506 Gasket Filter Cover
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Twin Disc MG506 Gasket Filter Cover

SKU: TDG506FH
$6.95
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Copyright 2026 © Bay Boater Marine, U.S.A.
  • Transmission Parts
    • Parts for Velvet Drive Marine Transmissions
    • HURTH HBW Series Mechanical Shift
    • Hurth HSW & ZF Series Hydraulic Shift Marine Transmissions
    • Hurth IRM Series 220 301 325 Models
    • Twin Disc Transmissions
  • Marine Engine Parts
    • Yamaha Outboard
    • Crusader Replacement Parts
    • Mercruiser Replacement Parts
  • Show All Products
  • Contact
  • Account details
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