Deck Fills & Drains

  1. 9% off

    Whitecap Replacement O-Ring for Deck Fill Cap - 6061OR

    $8.96
    $8.11
    2
  2. 9% off

    Sea-Dog Garboard Drain and Plug - 520040-1

    $20.23
    $18.25
    0
  3. 9% off

    Jabsco Water Pressure Regulator - 44412-1045

    $97.87
    $88.15
    1
  4. 9% off

    Whitecap Transom Well Drain Tube - S-3818C

    $17.59
    $15.88
  5. 9% off

    Perko Fuel & Water Fill

    $68.26
    $61.50
  6. 9% off

    Whitecap EPA Pressurized System Deck Fill

    $166.98 - $260.04
    $166.98 - $234.09
  7. 9% off

    Sea-Dog Stainless Steel Hose Deck Fill Replacement Cap

    $30.19 - $34.42
    $27.23 - $31.04
  8. 9% off

    Forespar Garboard Drain Tube with Plug

    $33.25
    $29.98
    0
  9. 9% off

    Nuova Rade Adjustable Flip-Up Drain/Bailer Plug - 45309

    $17.94
    $16.21
    1
  10. 9% off

    Perko T-Handle Garboard Drain Plug - 0266DP0PLB

    $151.45
    $136.37
    0
  11. 9% off

    Sea-Dog Nylon Drain Plug - 520010-1

    $6.18
    $5.62
    0
  12. 9% off

    Sea-Dog Replacement Drain Plug - 520041-1

    $10.30
    $9.33
    1
  13. Perko Garboard Drain Plug - 0714DP1PLB

    $44.79
  14. 9% off

    Perko Vented Gas Fill

    $44.29
    $39.92 - $42.11
    1
  15. 9% off

    Perko Unmarked Fill

    $162.73 - $255.79
    $146.52 - $230.27
  16. 9% off

    Perko Unmarked Fill Cap

    $111.97 - $293.86
    $100.84 - $264.54
  17. 9% off

    Seachoice Drain Tube

    $7.87 - $15.81
    $7.14 - $14.29
    2
  18. 6% off

    Seachoice Stainless Steel Deck Fill with Cap

    $69.67 - $88.00
    $64.84 - $83.63
  19. Beckson Screw Type Drain Plug - 1"

    $8.96 - $10.17
  20. 9% off

    Whitecap Replacement Deck Fill Key - 6060C

    $17.52
    $15.83
    1
  21. 9% off

    Sea-Dog Snap Handle Drain Plug - 520070-1

    $9.57
    $8.66
    1
  22. 9% off

    Jabsco Water Pressure Regulator - 44411-0045

    $95.05
    $85.61
    0
  23. 9% off

    Whitecap Brass Screw Type Bailer Plug

    $10.89 - $15.94
    $9.86 - $14.40
  24. Scandvik Flush Shower Drain - 10352

    $26.25
  25. 9% off

    Whitecap Livewell Drain Thru Hull

    $25.27 - $26.54
    $22.81 - $23.95
  26. 9% off

    Perko Flush Mount Cockpit Scupper - 0285DP

    $31.60
    $28.50
  27. Whitecap Replacement Deck FIll Cap and Chain - 6074C

    $55.57
  28. 9% off

    Seachoice Splashwell Drain Tube - 19131

    $10.26
    $9.28
  29. Forespar MF 830 Deck Fill

    $35.51 - $41.15
    See price in cart
    1
  30. 9% off

    Seachoice Gas Deck Fill with Cap & Beaded Chain Tether - 32041

    $23.57
    $21.27
  31. 9% off

    Sea-Dog Fresh Water Inlet

    $33.01 - $45.70
    $29.77 - $41.19
  32. 9% off

    Forespar CF254 Flush Head Deck Drain with Hose Tailpipe - 906038

    $31.00
    $27.95
    0
  33. 9% off

    T-H Marine Flush Mount Scupper Valve Assembly

    $15.29 - $18.69
    $15.29 - $16.87
    0
  34. 9% off

    T-H Marine Drain Plug

    $13.39
    $12.10
    0
  35. 9% off

    T-H Marine All Purpose Drain/Hatch Drain

    $9.03
    $8.18
    0
  36. 9% off

    T-H Marine Push-In Overflow Drain Tube

    $18.87 - $55.57
    $17.04 - $50.08
    1
  37. 9% off

    White Water Wire Deck Plate Key - 1350KY

    $8.35
    $7.58
    0
  38. 9% off

    Perko Fuel System Replacement Locking Gas Cap - 1324DP1BLK

    $58.39
    $52.61
    0
  39. 9% off

    Sea-Dog Plugmate Garboard/Drain Plug Wrench - 520045-1

    $17.88
    $16.15
    1
  40. 9% off

    Sea-Dog Scupper Valve - 520500-1

    $8.71
    $7.89
    1
  41. Camco Water Pressure Regulator - 40055

    $19.56
    0
  42. Attwood Drain Plug Kit - 17211-3

    $9.31
    0
  43. 9% off

    Whitecap Nylon Garboard Drain Plug - 3051BC

    $7.03
    $6.38
    1
  44. 9% off

    Whitecap Tee Handle Drain Plug with Stainless Steel Cable & Nut - S-0242C

    $9.96
    $9.02
  45. 9% off

    Whitecap Brass Snap-Lever Type Bailer Plug

    $11.10 - $12.39
    $10.05 - $11.20
  46. 9% off

    Whitecap Brass Drain Tube - S-5064C

    $12.51
    $11.31
  47. 9% off

    Whitecap Nylon Deck Fill Replacement Cap

    $12.85
    $11.62
  48. 9% off

    Whitecap Tapered Hose Deck Fill

    $148.63 - $152.86
    $133.83 - $137.64

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!