The 4 Best Boat sump boxes (2023 reviews)

boat sump boxes
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Are you planning to buy boat sump boxs, and are you confused about the options ? You have landed on the right page.

Our review process:

Our Top Picks:

Attwood Boat sump box
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Five Oceans Boat sump box
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KIMISS Boat sump box
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Attwood sump box
Buy: READ REVIEW

Attwood Boat sump box

Attwood Boat sump box
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The attwood boat sump box should be able to handle its purpose and duties with ease. This Attwood sump requires far less cleaning as the strainer holes are much larger,still stops hair, but the soapy water flows right through keeping the shower floor empty. It is a direct replacement, as inlets move and mounting screw holes move. The unit is slightly smaller than the one it replaces which allows just enough space to run a hose on either side to avoid stacking. It is also extremely quiet.

The pump is extremely easy to install. The wiring is simple and the container size shouldn't be too large for almost any boat. This is a very high quality piece of equipment.

Why We Like This:
  • Works great and no worries of a backup and overflow into
  • Great product, easily installed and works very well
  • Excellent, very low noise and works fanstastically well
  • Leaks, very serviceable and heavy duty unit

Five Oceans Boat sump box

Five Oceans Boat sump box
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The five oceans boat sump box is specially designed for your daily usage and has all useful features. The All-in-one pump and integrated float switch automatically turns on/off system. It's so powerful that the pump empties the attached basin after a second or two of running. This will remove the pressure on the clips holding it. The hose cutouts are close together if you have multiple inlets to your sump system.

These are very rigid plastic, the lid is transparent so you can quickly see if it needs to be cleaned out, the lid is secured by tabs and screws, a much better design. The 1.5 inch input is real tight next to the other outputs. It allows easy cleaning to add to that the check valve on the outlet stops water from flowing back into the tank. It is great with no leaks or issues.

Why We Like This:
  • Turns on when water level rises and shuts off when water is removed
  • Great item to get rid of shower/tub water and no more stinky bilge water
  • New and hot release

KIMISS Boat sump box

KIMISS Boat sump box
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The kimiss boat sump box's superior materials makes sure that it ages well with use. It has a builtin switch, which can automatically control according to the water level, no external float switch is required. It comes with ignition protection function, no need to worry about the unsecure factors when you start it.

Why We Like This:
  • Built‑in check valve, which can prevent dirty water backflow to the bathtub and cabin
  • Transparent snap‑on cover with gasket seal and removable mesh filter for easy cleaning
  • Tight fitting lid to mimimize splashing and odors

Attwood sump box

Attwood sump box
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The attwood sump box is capable of outshining several other box featured in this list in overall features for the price point. The sump box even includes an air to prevent air locks. It offers fast water flow into and out of sump. The lid snaps in to allow quick installation (and removal for cleaning) and includes a gasket to seal the sump box against overflow.

Why We Like This:
  • Meets or exceeds all applicable of the abyc and uscg.features
  • New and hot release