Scupper Valve, 2-7/8" - Attwood
Price: $8.85
Save: $1.64
(15% Off $10.49)
Part # 3876-3
2nd Day Air for $2 More Eligible

Water logging in the cockpit is a problem that many boaters face. If you have a self-bailing cockpit, then you can install the Attwood Scupper Valve to drain water and fluids.

  • For use in self-bailing cockpits
  • Features an acetal construction
  • Designed to be mounted over existing thu-hull fittings up to 2”

Install the Attwood Scupper Valve using 4 screws.

Features of Attwood Scupper Valves

  • Auto-closing flapper valve allows outward water to exit and prevents backwash from entering the cockpit
  • Design mounts easily over existing thru-hull fittings up to 2”
  • Corrosion resistant parts and construction.


  • Manf. Part # 3876-3
  • Diameter: 2-7/8 inches
Average Customer Review for Scupper Valve, 2-7/8" - Attwood
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scupper valve
by Stanley from Wrangell, Alaska on June 21, 2016
two thumbs up. perfect match.
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Attwood Scupper
by Kenneth from Jacksonville, Florida on August 31, 2013
Needed to replace an Attwood scupper. Tried to replace the Attwood with a SeaDog but it did not fit existing holes. Ordered the Attwood and it was shipped and delivered as promised. Fits perfectly.
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Cant get help from Attwood with these.
by ROY from LAS Vegas, Nevada on August 22, 2013
I ordered a set of these from Attwood and when I tried to install them the instructions indicate that an additional "retainer" ring is needed for transom mounting. I went onto Attwood's web site and discovered the part number referenced in the instructions is listed as "no match" when entered on the web site. I emailed Attwood for assistance and as of today, 2 weeks later, I still have not gotten a response, they do not post a phone number on their web site either. I had to order another set of scuppers to use the white ring as the retainer ring mentioned in the instructions. It should have been included in the original package.
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by Robert from Greensboro, North Carolina on September 18, 2012
Holes did not line up with my existing scupper valve but it works fine,
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Scupper Valve
by William from Dauphin Island, Alabama on July 14, 2012
Just what I needed.
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Is this scupper a positive seating valve and prevent 100% protection from water coming thru it?
Attwood says it will not prevent 100% of water coming in. It's design is to not allow most water to come in, but not all water.

I have a scupper opening of 1.5" will your scupper work...Also is there a scupper valve that will keep out all water. If so do you have it....?
We don't have any that keep all water out. We have 365DP which is for a 1-1/2" hose size.

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