20 Best Boat Scupper [2025]

Are you looking for the best boat scupper? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling boat scupper.

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# Preview Product
1 Invincible Marine BR54230 Cockpit Scupper Valve 2-7/8' OD, One Size Invincible Marine BR54230 Cockpit Scupper Valve 2-7/8" OD, One Size
2 Seaworthy Innovations 316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N... Seaworthy Innovations 316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper...
3 Boating Accessories New SEACHOICE SELF BAILING SCUPPER SCP 18271 Boating Accessories New SEACHOICE SELF BAILING SCUPPER SCP 18271
4 Attwood 3876-3 Boat Self-Bailing Cockpit Mounted Scupper Valve Kit Attwood 3876-3 Boat Self-Bailing Cockpit Mounted Scupper Valve Kit
5 T-H Marine Flow-Max Boat Self-Bailing Ball Scupper Valve - Positive Sealing Ball Drain Replaces Old... T-H Marine Flow-Max Boat Self-Bailing Ball Scupper Valve - Positive Sealing Ball Drain Replaces...
6 Boat Yacht Floor Deck Drain 45 x 25mm Scupper, Marine 316 Stainless Steel for Yacht Kayak Deck... Boat Yacht Floor Deck Drain 45 x 25mm Scupper, Marine 316 Stainless Steel for Yacht Kayak Deck...
7 ReplacementBoatParts 1-9/16' Scupper Flapper Kit ReplacementBoatParts 1-9/16" Scupper Flapper Kit
8 T & H Marine Supplies 90 Degree Cockpit Scupper Drain - White, 90° Outlet - 1-1/2” Hose Dia -... T & H Marine Supplies 90 Degree Cockpit Scupper Drain - White, 90° Outlet - 1-1/2” Hose Dia -...
9 Attwood 66553-3 Boat Self-Bailing Cockpit Barbed Stainless Steel 1 ½-Inch Scupper Valve Attwood 66553-3 Boat Self-Bailing Cockpit Barbed Stainless Steel 1 ½-Inch Scupper Valve
10 Plug Pads EZ Scupper - 3M VHB Tape Mounted Boat Scupper - No Screws or Sealants Required! - Transom... Plug Pads EZ Scupper - 3M VHB Tape Mounted Boat Scupper - No Screws or Sealants Required! -...
11 Attwood Scupper Valve 2-3/4in 3876-3 Attwood Scupper Valve 2-3/4in 3876-3
12 Seaworthy Innovations 316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper... Seaworthy Innovations 316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper...
13 SeaSense Cockpit Scupper Valve Od (2-7/8- Inch) SeaSense Cockpit Scupper Valve Od (2-7/8- Inch)
14 2' Replacement Flapper for Stainless Steel and Plastic Thru Hull scuppers 2" Replacement Flapper for Stainless Steel and Plastic Thru Hull scuppers
15 TH Marine Scupper Adapter, White - SA2DP TH Marine Scupper Adapter, White - SA2DP
16 Medoore 2 Pack Universal Kayak Scupper Plugs Canoe Boat Scupper Stopper Plugs Bungs Replacement for... Medoore 2 Pack Universal Kayak Scupper Plugs Canoe Boat Scupper Stopper Plugs Bungs Replacement...
17 New Marine/Boat Large Rectangular Scupper (Quickly drains decks) - 1pack New Marine/Boat Large Rectangular Scupper (Quickly drains decks) - 1pack
18 Replacement Boat Parts White Recessed Push-Together Scupper Replacement Boat Parts White Recessed Push-Together Scupper
19 White Water 6656N-SCP Nylon Thru Hull Scupper, 1-1/2' Hose, 2-3/16' Cutout White Water 6656N-SCP Nylon Thru Hull Scupper, 1-1/2" Hose, 2-3/16" Cutout
20 Seachoice 18261 Boat Self-Bailing Cockpit Mounted 2-7/8-Inch Scupper Valve Kit Seachoice 18261 Boat Self-Bailing Cockpit Mounted 2-7/8-Inch Scupper Valve Kit
Bestseller No. 1
Invincible Marine BR54230 Cockpit Scupper Valve 2-7/8" OD, One Size
  • For boats with self bailing cockpits
  • Mounts above the waterline
  • Allows water to exit but not to enter
  • Screws directly to the transom
  • A 2-7/8-inch rubber valve
Bestseller No. 2
Seaworthy Innovations 316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N...
  • 316 Stainless Steel Frame, Flapper, Backplate, and Screws (4x) with Silicone Seal
  • 1.625" thru hole (other dimensions in photo)
  • Improved sealing compared to rubber flapper.
  • Improved appearance and durability compared to plastic fame and rubber flapper version
  • Please make sure the screw hole orientation is compatible with your application. (N,E,S,W vs NE,NW,SE,SW)
SaleBestseller No. 3
Boating Accessories New SEACHOICE SELF BAILING SCUPPER SCP 18271
  • Efficiently drains water from self bailing cockpits
  • Designed to be mounted over existing thru-hull fittings with 3/4 inch to 1-1/2 inch openings
  • Diameter: 2-7/8 inch
  • Color: Clear
  • Accepts 6 (six) #8 fasteners
SaleBestseller No. 4
Attwood 3876-3 Boat Self-Bailing Cockpit Mounted Scupper Valve Kit
  • Efficiently drains water from self bailing cockpits
  • Designed to be mounted over existing thru-hull fittings up to 2 inch
  • Inlcudes retainer ring, screws, rubber flapper valve and gasket.
  • Can be mounted on transom above waterline or as thru-hull cockpit drain
  • Diameter: 2-7/8 inch
Bestseller No. 5
T-H Marine Flow-Max Boat Self-Bailing Ball Scupper Valve - Positive Sealing Ball Drain Replaces Old...
  • Replace Worn Out Flapper Scuppers - the Flow Max ball scupper features multiple mounting openings to make retrofits quick and easy - no filling holes...
  • Improved Drainage - self bailing scupper drain features a larger exit hole that offers up to 70% more drainage than other boat scuppers
  • Keep Your Cockpit and Deck Dry - boat scupper ball uses neutral buoyancy to ensure a tight seal and eliminate the possibility of water flowing back...
  • Easy Cleaning - self-draining scupper features a new twist-off design that makes cleaning out excess debris a snap
  • Installation - scupper seal is slotted to fit over 1-1/4" motorwell tubes and includes a safety screw to keep valve in place - installation will...
Bestseller No. 6
Boat Yacht Floor Deck Drain 45 x 25mm Scupper, Marine 316 Stainless Steel for Yacht Kayak Deck...
  • 【Common size】Tube Outer Diameter & Height: 22mm (7/8 inch). Overall Height: 25mm/ 1 inch.
  • 【Easy to use】Good drainage performance for easy cleaning.
  • 【Scope of application】Commonly used in Yacht Kayak Deck Drainage or Bathroom Drain Supplies ,ship floor drains, drains, etc.
  • 【Durable to use】Precision casting 316 Stainless Steel, mirror polishing or polished finish ,more attractive.
  • 【Package including】You will receive 2 piece boat deck drain and mounting screws
Bestseller No. 7
ReplacementBoatParts 1-9/16" Scupper Flapper Kit
  • 1-9/16" diameter black rubber flapper and black plastic retainer wedge
  • Fits any scupper with a 1-1/2" flapper valve.
  • If your scupper is fine, why replace the whole thing?
Bestseller No. 8
T & H Marine Supplies 90 Degree Cockpit Scupper Drain - White, 90° Outlet - 1-1/2” Hose Dia -...
  • 90° Outlet - 1-1/2” Hose Dia - White
  • Check ball inside prevents water backup
  • Top screen removable for cleaning
  • Molded from high strength UV stable polymer
  • Fit 1-1/2" hose
SaleBestseller No. 9
Attwood 66553-3 Boat Self-Bailing Cockpit Barbed Stainless Steel 1 ½-Inch Scupper Valve
  • Package length: 7.7 cm
  • Package width: 14.6 cm
  • Package height: 28.9 cm
  • Product Type: FISHING EQUIPMENT
Bestseller No. 10
Plug Pads EZ Scupper - 3M VHB Tape Mounted Boat Scupper - No Screws or Sealants Required! - Transom...
  • 316 Stainless Steel Body -- Replaceable Flapper (Search Amazon "B09K8MMKF3")
  • Intended for transom mount application with direct gel-coat mount only
  • Adhesive will seal existing screw holes in hull from old scupper
  • 2.85" outer diameter & 1.5" thru hole (inner diameter)
  • Adheres to hull with 3M VHB adhesive
Bestseller No. 11
Attwood Scupper Valve 2-3/4in 3876-3
  • Attwood Scupper Valve Mounts on transom slightly above water line to provide a water exit for boats with self-bailing cockpits. Flapper valve opens...
  • Accommodates 3875B thru-transom thru-hull connector (screw holes must be drilled for installation). Use as a replacement valve for 3881 thru-transom...
  • SOLD EACH
Bestseller No. 12
Seaworthy Innovations 316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper...
  • 3.125" Outer Diameter of Frame with a 1.625" Thru Hole
  • Attaches to boat with 3M VHB adhesive (Acceptable surfaces include epoxy paint, gelcoat, and aluminum)
  • 316 Stainless Steel Construction with Stationary Silicone Seal
  • Patent Pending Hinged Stainless Steel Door
Bestseller No. 13
SeaSense Cockpit Scupper Valve Od (2-7/8- Inch)
  • Flap allows water to exit and not enter
  • For boats with self-bailing cockpits
  • Mounts just above the water line
  • Screw holes must be drilled for installation
Bestseller No. 14
2" Replacement Flapper for Stainless Steel and Plastic Thru Hull scuppers
  • 2" Scupper Flapper Kit
  • Includes flapper, mounting wedge, and machine screw
Bestseller No. 15
TH Marine Scupper Adapter, White - SA2DP
  • flexible thermo-plastic
  • totally impervious to the effects of sun and chemicals found in the marine environment.
  • will not curl up, rot, or lose their sealing ability
  • designed to mount over a drain tube or to mount directly to a 1 1/2" thru hull with four screws.
Bestseller No. 16
Medoore 2 Pack Universal Kayak Scupper Plugs Canoe Boat Scupper Stopper Plugs Bungs Replacement for...
  • Practical design: tiered structure allows for a universal fit for scupper kayaks, pull handle design for quick and easy removal
  • Material: kayak stopper is made of quality rubber for long lasting use, great water resistant performance, easy to install in your kayak
  • Widely usage: these scupper stoppers are great replacement accessories for kayak, canoe, fishing boat, inflatable and so on
  • Functions: the boat scupper plug can stop water infiltration, drain the water out of the inner hull of your boat, helpful to stay dry while you are...
  • Size: these rubber boat scupper stoppers are approx. 5.08 cm/ 2 inches in top diameter and 3.5 cm/ 1.4 inches in height; Please check the size before...
Bestseller No. 18
Replacement Boat Parts White Recessed Push-Together Scupper
  • White Recessed Flapper Push-together Scupper
Bestseller No. 19
White Water 6656N-SCP Nylon Thru Hull Scupper, 1-1/2" Hose, 2-3/16" Cutout
  • A) 1-1/2" B) 3-1/4" C) 5" D) 2-3/16" E) 2-1/2" Thread: 1-1/2”-11.5NPS
  • Sold by each
  • The black rubber flap automatically closes to prevent incoming backwash.
  • Scupper body is made of marine grade nylon helping to withstand hose flexing. Nylon is naturally corrosion resistant. Adding sealant to the flange...
  • A barbed end accepts multiple hose clamps.
Bestseller No. 20
Seachoice 18261 Boat Self-Bailing Cockpit Mounted 2-7/8-Inch Scupper Valve Kit
  • Efficiently drains water from self bailing cockpits
  • Suitable for mounting on transom above waterline or as thru-hull cockpit drain
  • Includes fiberglass reinforced retainer ring, rubber flapper and gasket
  • Diameter: 2-7/8 inch

Having trouble finding a great boat scupper?

This problem is well understood by us because we have gone through the entire boat scupper research process ourselves, which is why we have put together a comprehensive list of the best boat scuppers available in the market today.

After hours of searching and using all the models on the market, we have found the best boat scupper for 2023. See our ranking below!

How Do You Buy The Best Boat Scupper?

Do you get stressed out thinking about shopping for a great boat scupper? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching boat scupper, which is why we have assembled a comprehensive list of the greatest boat scupper available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for boat scupper that you consider buying. Your questions might include the following:

  • Is it worth buying an boat scupper?
  • What benefits are there with buying an boat scupper?
  • What factors deserve consideration when shopping for an effective boat scupper?
  • Why is it crucial to invest in any boat scupper, much less the best one?
  • Which boat scupper are good in the current market?
  • Where can you find information like this about boat scupper?

We’re convinced that you likely have far more questions than just these regarding boat scupper, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for boat scupper, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible boat scupper. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an boat scupper buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available boat scupper currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of boat scupper has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an boat scupper?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your boat scupper.
  5. Customer Ratings: Number ratings grade boat scupper objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their boat scupper.
  7. Product Quality: You don’t always get what you pay for with an boat scupper, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an boat scupper is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining boat scupper information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding boat scupper is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: What are the best boat scuppers for 2023?

A: Best Boat Scuppers – Top 5 Boat Scuppers of 2023 Best Boat Scuppers Score TH Marine Cockpit Deck Boat Scuppers 3.9 Boating Accessories New Seachoice Scuppe … 3.3 New Marine Large Rectangular Scupper 4.0 Replacement Boat Parts Boat Scuppers 4.0 1 more rows …

Q: What is a boat scupper?

A: It is a large-sized boat scupper that is rectangular in shape and promises to do wonders for you! 2. Boating Accessories – Self Bailing Scupper This brand new boat scupper from Boating Accessories has so many attractive features that you will definitely want to buy it. What are they? Please keep reading to find out:

Q: Why choose SeaChoice boat scuppers?

A: Because Seachoice is such marine accessories brand that has guaranteed and maintained its quality and service in a balanced way. This boat scuppers are perfectly suitable for self-bailing boat cockpits.

Q: Do boat scupper drains the deck quickly?

A: This single pack of a boat scupper is known to drain the deck extremely quickly. It also falls in the affordable range, which is why it is highly preferable. Let’s find out more: It has been designed for decks above the waterline.