Deck Fills & Drains

  1. Whitecap Replacement Nylon Deck Fill Cap

    $13.49
    5
  2. Forespar Garboard Drain Flange with Plug

    $14.08
    2
  3. Sea-Dog Universal Deck Plate Key - 335690-1

    $14.11
  4. Whitecap Tee Handle Boat Drain Plug with Cable - S-0211C

    $14.36
    2
  5. Whitecap Stainless Steel Screw Type Bailer Plug - S-0291C

    $14.81
  6. Seachoice Nylon Deck Fill with Cap

    $15.05 - $15.91
  7. T-H Marine Flush Mount Scupper Valve Assembly

    $15.29 - $18.69
    0
  8. Groco Garboard Drain with Plug

    $15.64 - $110.56
    1
  9. Whitecap Stainless Steel Snap-Lever Bailer Plug - S-0292C

    $16.07
  10. Forespar MF 830 Deck Fill Cap

    $16.36
  11. Seaview Vault Center Drain Plug

    $16.40 - $73.92
  12. Sea-Dog Plugmate Garboard/Drain Plug Wrench - 520045-1

    $17.04
    1
  13. Whitecap Deck Plate Key - 6060

    $17.38
  14. Seaview Vault Series Pro Transom Drain Plug with Gasket and Garboard - SV101VP

    $17.50
    0
  15. Whitecap Replacement Deck Fill Key - 6060C

    $17.52
    1
  16. Vetus Wrench Key - VE87

    $17.57
    0
  17. Whitecap Transom Well Drain Tube - S-3818C

    $17.62
  18. Nuova Rade Adjustable Flip-Up Drain/Bailer Plug - 45309

    $17.94
    1
  19. Whitecap Universal Deck Plate Key - S-7041P

    $18.17
  20. Forespar MF 790 Drain Plug - 907001

    $18.59
  21. T-H Marine Push-In Overflow Drain Tube

    $18.87 - $55.57
    1
  22. Camco Water Pressure Regulator - 40055

    $19.56
    0
  23. Seachoice Garboard Drain Flange & Plug

    $19.80 - $25.22
  24. T-H Marine Scupper Flapper Repair Kit - FSRK-3-DP

    $20.17
    1
  25. Sea-Dog Garboard Drain and Plug - 520040-1

    $20.23
    0
  26. Perko Surface Mount Scupper Valve Assembly - 0365DP

    $21.71
  27. T-H Marine Large Rectangular Scuppers - LRS-2-DP

    $21.95
    0
  28. Seaview InteliPlug Pro Captive Drain Plug & Garboard Assembly - SVIPPRO

    $22.02
    0
  29. Sea-Dog Garboard Drain T-Handle Plug - 520047-1

    $22.29
  30. Davis Instruments Snap Tool Multi-Key - 382

    $23.29
    0
  31. Seachoice Gas Deck Fill with Cap & Beaded Chain Tether - 32041

    $23.57
  32. Seachoice Self Bailing Scupper

    $23.65 - $58.39
  33. T-H Marine Flow-Max Ball Scupper - FMS-1-0-DP

    $24.10
    0
  34. Sea-Dog Chrome Plated Zinc Hose Deck Fill with Splash Guard - 351750-1

    $25.19
  35. Whitecap Livewell Drain Thru Hull

    $25.32 - $26.78
  36. Whitecap Garboard Drain Replacement Plug - 6352C

    $26.03
  37. Sea-Dog Washdown Water Outlet

    $26.19 - $35.83
  38. Scandvik Flush Shower Drain - 10352

    $26.25
  39. Perko Polymer Gas Fill - 1613DP0BLK

    $26.94
  40. Whitecap Chrome Plated Zinc Hose Deck Fill with Splash Guard - S-7021C

    $27.70
    1
  41. Forespar MF 830 Deck Fill

    $35.51 - $41.15
    See price in cart
    1
  42. Scandvik Shower Drain/Scupper - 10338

    $30.19
  43. Sea-Dog Stainless Steel Hose Deck Fill Replacement Cap

    $30.19 - $34.42
  44. Sea-Dog Thru Hull with Scupper Valve - 520510-1

    $30.23
    0
  45. Forespar CF254 Flush Head Deck Drain with Hose Tailpipe - 906038

    $31.00
    0
  46. Perko Flush Mount Cockpit Scupper - 0285DP

    $31.60
  47. Perko Deck Fill - 1313DP0CHR

    $33.01
    0
  48. Whitecap Nylon Deck Fill

    $33.01 - $34.42
    0

About Deck Fills & Drains

Cockpit Drains & Scuppers

Defender Marine offers a variety of cockpit drains, self-bailing scupper drains, and thru hulls with scupper valves. Thru hull valves and deck scuppers can be installed above or below the waterline and are offered in a polymer composite called Marelon, injection-molded nylon, or molded fiberglass.

Self bailers take the guess work out of cockpit drains.

When a boat is underway the pressure of water running out through the scupper opens a one-directional valve to release the water from the hull. When the scupper is closed, during rest, no water can leak into the boat. Self-bailers assist bilge pumps in keeping the hull free of excess water and are especially helpful on boats that are "wet" or take on water and spray while running.

What are deck drains made of?

Defender Marine offers scupper drains fabricated out of a variety of materials. Marelon is a polymer composite that never cracks or loses its shape, while injection-molded nylon is strong and UV resistant. Molded fiberglass cockpit drains, as well as polycarbonate boat scuppers, offer a few more options while shopping for scupper drains.

I've got a new scupper, now what?

Installation above the waterline is not complicated and can be a DIY project - just remember to measure twice! Also, examine that boat scupper drain that you have purchased and be certain that it will work for your application. Hose barb or threaded connections are questions that need to be answered before the project starts, as cockpit drains and scuppers must be plumbed to exit the hull. Be certain the project is completely prepped, and all gasket materials are ready to go before you start!