Deck Fills & Drains

  1. Whitecap Replacement Push Up Deck Fill Cap

    $55.93 - $64.03
    0
  2. Perko Waste Deck Plate - 1269DP0CHR

    $55.93
  3. Perko Fuel & Water Fill

    $55.93
  4. Whitecap Universal Push-Up Deck Fill Replacement Cap

    $55.93 - $64.03
  5. Seachoice Stainless Steel Deck Fill with Cap

    $53.23
  6. T-H Marine Overflow Drain Tube - ODT-2T-DP

    $50.53
    0
  7. Whitecap Self-Captive Garboard Drain Plug pkg

    $50.53 - $57.28
  8. Perko Locking Fuel Fill Insert - 0525DP0BLK

    $49.18
  9. Attwood Deck Fill with Gasoline Imprint - 66406-5

    $47.83
  10. Whitecap EPA 1/4-Turn Pull-Up Cap with Chain

    $47.83
    3
  11. Perko Plastic Straight Neck Vented Deck Fill - 0543DPGBLK

    $46.48
  12. Perko Plastic Angled Neck Vented Deck Fill

    $46.48
  13. Whitecap Replacement Deck FIll Cap and Chain - 6074C

    $46.48
  14. Dometic NozAll Deck Pump-Out Adapter

    $45.13 - $46.48
    3
  15. Whitecap Replacement Deck FIll Cap and Chain - 6002C

    $45.13
  16. Whitecap Washdown Inlet

    $45.13 - $80.23
  17. Perko Garboard Drain Plug - 0714DP1PLB

    $43.78
  18. Perko Fuel System Locking Cap - 1324DP0BLK

    $43.78
  19. Whitecap Replacement Pull-Up Threaded Cap with Chain - 6063

    $42.43
  20. Whitecap Universal EPA Pull-up Cap with Chain - 6063C

    $42.43
  21. Whitecap Drain Tube Grate

    $42.43
  22. 14% off

    Plastimo Stainless Steel Winch/Deck Filler Key - 61804

    $49.18
    $41.89
    2
  23. 19% off

    Perko Fuel System Replacement Locking Gas Cap - 1324DP1BLK

    $51.88
    $41.62
    0
  24. Perko Adjustable Deck Plate Key - 0826DP0CHR

    $41.08
    1
  25. Seaview Vault Stainless Steel Drain Plug

    $40.29 - $61.83
  26. Seachoice Gas Deck Fill with Vent & Cap - 32061

    $39.73
  27. Whitecap Self-Captive Garboard Drain Replacement Plug - 6354C

    $39.73
  28. Perko Replacement Vented Flip Top Cap - 0795DP0BLK

    $39.73
  29. Whitecap Angled Scupper with Barb - 6559

    $38.38
  30. Whitecap Threaded Scupper - S-3814

    $38.38
  31. Perko Vented Gas Fill

    $37.03
    1
  32. Whitecap Stainless Trim Nylon Scupper with Hose Barb - 6561

    $35.68
  33. Seaview InteliPlug Pro Captive Drain Plug & Garboard Assembly - SVIPPRO

    $34.62
    0
  34. Forespar MF 830 Deck Fill

    $34.02 - $39.42
  35. Forespar Garboard Drain Tube with Plug

    $33.43
    0
  36. Seachoice Garboard Drain Plug - 50-18661

    $33.19
  37. Groco Adjustable Collapsible Spanner Wrench - SW-2531

    $31.63
    2
  38. Perko Deck Fill - 1313DP0CHR

    $31.63
    0
  39. Whitecap Garboard Drain Plug - 6351C

    $31.63
  40. Whitecap Nylon Cockpit Scupper

    $31.63
  41. Whitecap Deck Fill Cap Replacement with Chain - 6061C

    $30.28
    1
  42. Whitecap Nylon Deck Fill

    $30.28
    0
  43. Whitecap Replacement Deck FIll Cap and Chain - 6061

    $30.28
  44. Forespar CF254 Flush Head Deck Drain with Hose Tailpipe - 906038

    $29.70
    0
  45. Scandvik Shower Drain/Scupper - 10338

    $28.93
  46. Seachoice Gas Deck Fill with Cap & Strap Tether - 32011

    $28.93
  47. Perko Flush Mount Cockpit Scupper - 0285DP

    $26.72
  48. Whitecap Chrome Plated Zinc Hose Deck Fill with Splash Guard - S-7021C

    $26.55

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!