Boat Scuppers Below Waterlines of 2025
Best Choice1
MojiateMojiate 2Pcs Boat Plastic Thru Hull Grey Nylon Join 1 ½-Inch Scupper Valve,Top Cover 316 Stainless Steel Cover,and Equipped with A Water Baffle
Main highlights- -【 Material】Made of durable polypropylene and stainless steel flange to withstand marine environments and provide excellent corrosion resistance.
- -【 Dimension】Hose diameter: 1-1/2 "(38.1mm)； Thread length: 2-1/2 "(63.5mm)； Installation head diameter: 3-1/4 "(82.5mm)；Total length: 5-1/9 "(130mm).
- - 【Professional Flapper】Specially designed with a black rubber flapper that allows water to drain and prevents incoming backwash.
- - 【Design】Equipped with a barbed end design that can accept multiple hose clamps, and a beautiful stainless steel 316 trim cover with mirror polish treatment.
- - 【Convenient Installation】Constructed to be simple and sturdy, making it easy to install. However, not recommended for use below the waterline.
9.7Exceptional
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Value for Money2
AhuliaoAhuliao Boat Scupper Drain Valve Self-Bailing Ball Fits 3/4 Inch to 1-1/2 Inch Boats Scuppers Openings - 2 Pack
Main highlights- 【Widely Applicable】Designed for boat scupper drains from 3/4 inches to 1-1/2 inches, with a diameter of 2-7/8 inches and a height of 1-13/16 inches, scuppers for boats is compatible with most boat models and sizes, ensuring a perfect fit for your vessel.
- 【Packaging and Service】2 x scuppers valves for boats. Thank you for purchasing our boat scuppers, we are committed to providing excellent customer service, if you have any questions about our boat scuppers, please feel free to contact us, we will answer you immediately.
- 【Efficient Self-draining Function】Boat scuppers transom adopts innovative self-draining ball technology, which can automatically drain accumulated water when the water level rises, while effectively blocking debris and seawater from intruding to ensure that the cabin remains dry and safe.
- 【Easy to Install and Maintain】This marine self-draining ball drain valve is designed with user convenience in mind. The installation process is quick and direct, and daily maintenance does not require tedious steps. Some models also come with special cleaning tools, making regular cleaning easier.
- 【Durable and Transparent Material】The boat drain scuppers valves is made of high-quality transparent material, which is not only sturdy and durable, but also allows you to clearly see the inside of the valve to ensure long-term reliability.
9.5Excellent
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3
T-H MARINE23% OffT-H MARINE Flow-Max Boat Self-Bailing Ball Scupper Valve - Positive Sealing Ball Drain Replaces Old Flapper Scuppers - Fits Over 1-1/8" Motorwell Tubes
Main highlights- Replace Worn Out Flapper Scuppers - the Flow Max ball scupper features multiple mounting openings to make retrofits quick and easy - no filling holes or re-drilling
- 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 into the drainage lines
- Installation - scupper seal is slotted to fit over 1-1/8" motorwell tubes and includes a safety screw to keep valve in place - installation will require tapered head screws
- Improved Drainage - self bailing scupper drain features a larger exit hole that offers up to 70% more drainage than other boat scuppers
- Easy Cleaning - self-draining scupper features a new twist-off design that makes cleaning out excess debris a snap
9.3Excellent
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4
SEAWORTHY INNOVATIONSSEAWORTHY INNOVATIONS EZ Scupper - Marine Grade Adhesive Mounted Boat Scupper - No Screws or Sealants Required! - Transom Mount Only
Main highlights- Patented by Seaworthy Innovations
- Mounts to Gelcoat, Aluminum, and Epoxy paint wihtout screws!
- 316 Stainless Steel Frame
9.2Excellent
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5
Replacement Boat PartsReplacement Boat Parts White Recessed Push-Together Scupper
Main highlights- Designed for efficient draining, ensuring no backflow and a dry boat.
9.0Excellent
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6
SEACHOICESeachoice Self-Bailing 2-7/8 In. Scupper Valve Kit, Clear
Main highlights- Efficiently drains water from self bailing cockpits
- Diameter: 2-7/8 inch
- Designed to be mounted over existing thru-hull fittings with 3/4 inch to 1-1/2 inch openings
- Color: Clear
- Accepts 6 (six) #8 fasteners
8.7Very Good
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7
BBTOBBTO 4PCS 1 1/2" Scupper Flappers Replacement Boats Scupper Drain Flappers Valves for Stainless Steel and Plastic Boat Hull Repair Kit Compatible with TH Mar-ine FSRK-3-DP
Main highlights- Wide Application: versatile in use, your boat scupper flapper is suitable for a variety of boats; Whether you're working on a scupper flapper repair kit or a new setup, this kit adapts to different drainage systems, ensuring you have a dependable solution for multiple vessels
- Seamless Compatibility: this boat scupper flaps solution is specifically compatible with TH Mar-ine FSRK-3-DP scupper flapper models; Enjoy the peace of mind that comes with using parts that match your existing boat scuppers kit, enhancing efficiency and performance without the fuss of mismatched components
- Quality Material: crafted from durable thermoplastic elastomer, This boat scupper flap kit offers long-lasting performance; Engineered for resilience, it withstands harsh ocean environments, making it a reliable choice for any boater; This black, 1 1/2-inch boat scupper flapper ensures effective sealing, providing peace of mind during your voyage
- Package Includes: the package includes 4x boat scupper flapper kits, offering good value and convenience; With a complete set at your disposal, you eliminate the hassle of frequent individual purchases; This scupper flappers replacement kit is a smart and practical solution for maintaining seamless drainage
- Effortless Installation: designed for simplicity, this boat scupper flapper kit is easy to install, allowing you to spend more time enjoying the water and less time on repairs; Even for DIY enthusiasts, setting up these boat scupper flaps is a breeze, ensuring your boat is ready quickly and efficiently
8.6Very Good
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8
ThrelacoThrelaco 2 Sets Boat Parts Boat Self Bailing Cockpit Mounted Scupper Valve Include 2-7/8 Inch Scupper Valve for Hull Repair
Main highlights- Friendly Design: our boat parts are simple to mount either on the transom above waterline or as a through-hull cockpit drain; It ensures efficient drainage from self-bailing cockpits for an enhanced boating experience
- Effective Sealing: the boats scuppers flapper kit featuring effective sealing ensure that the repaired Scupper system effectively prevents moisture from flowing back into the boat and keeps the cabin dry
- Durable Construction: the boat scupper valves are crafted from robust ABS and rubber materials, designed to withstand the challenging marine environment; They are resilient against UV rays, salt spray, and fluctuating temperatures, ensuring prolonged durability for your scupper system
- Comprehensive Repair Kit: our scupper flapper replacement kit is ideal for DIY enthusiasts and marine professionals; It's designed for hassle installation, optimizing your scupper valve performance
- Complete Package: the scupper valve package includes 2 x Scupper Valve and 4 x Scupper Flapper Replacement; The enough quantity can meet your use and replacement needs, relieving the struggling with part compatibility
8.5Good
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9
T-H MarineT-H Marine Flush Mount Scupper Valve Assembly | Durable Marine Scupper Valve with Curl Proof Flapper for 1" to 1.25" Drain Tubes | Versatile Installation, White Frame/Black Flapper
Main highlights- SEAMLESS WATERTIGHT INSTALLATION - Engineered with a grooved interior designed to fit perfectly over drain flanges, our scupper assembly guarantees a watertight seal every time, allowing for peace of mind on the water.
- LONG-LASTING PERFORMANCE - Built with robust materials engineered for long-lasting durability, our scupper valve significantly reduces the need for replacements and offers exceptional value, ensuring a reliable boating experience for years to come.
- ENHANCED WATER DRAINAGE - Our premium flush mount scupper valve features a durable thermo-plastic flapper designed to withstand harsh marine conditions, ensuring your boat stays dry and safe from unwanted water intrusion.
- EASY AND VERSATILE INSTALLATION - This flexible scupper adapter streamlines the installation process over drain tubes or directly to a 1½” thru hull with just four screws, making it a hassle-free upgrade to your boating setup.
- CURL-PROOF FLAPPER DESIGN - Say goodbye to curling or warping flappers that compromise performance. Our innovative curl-proof design maintains a secure seal, providing reliable water barrier functionality throughout every trip.
- CONFIDENCE IN BOATING SAFETY - Protect your boat with a reliable boat drain valve designed to eliminate unwanted water accumulation, ensuring enhanced safety and enjoyment during every boating adventure.
- ADAPTABLE TO MULTIPLE BOAT MODELS - This marine scupper valve accommodates drain tubes from 1” to 1-1/4”, making it a versatile solution for a wide range of boats, ensuring compatibility and easy replacement for various setups.
8.4Good
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10
T-H MarineT. H. Marine Duckbill Scupper-Black/White
Main highlights- Tough Thermoplastic Flapper
- Seals Tight Under Water Pressure
- Outer Ring is 2-3/4" in Diameter
- For all your Boat Parts and Accessories click on "Available from these sellers" then click on AccessoriZ My Ride
- Easy to Install Over Drain Tubes
8.2Good
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