Keep Your Boat Dry & Safe with Professional-Grade Drainage
Whether you're navigating choppy waves or docked under heavy rain, our boat self-bailing cockpit scupper valve kit ensures a dry, secure marine environment through its dual-layer leak-proof design. The reinforced rubber flapper and precision-molded ABS frame create an airtight seal, actively blocking moisture from re-entering the cockpit while allowing rapid drainage—perfect for boats, yachts.

Specifications & Material:
Included:
Retainer ring, Screws, Scupper flappers and gasket
Part Number: 3876-3
Material: ‎ABS plastic and flexible rubber
Boat Scuppers Diameter: 2-7/8 inch

Scupper Flapper Kit Solving Real-World Problems:
Say goodbye to soggy decks and corroded hulls. Our boat scuppers transom high-flow design clears water 30% faster than traditional models, enhancing reducing slip hazards.

Why Choose Our Scupper Flapper Replacement?
Sealing Performance: Unlike generic scupper valve, our flapper system combines flexibility with reliability. The thick rubber resists deformation under pressure, while the ABS housing prevents UV degradation and saltwater corrosion, even in harsh offshore conditions.
Installation Flexibility: Designed for boat deck scuppers mounting above the waterline and thru-hull cockpit drainage, this boat self bailing kit adapts to your vessel's unique setup. Pre-drilled holes and stainless steel screws (included) simplify installation—no professional help needed.
Ideal for Marine Professionals
Boat scupper flappers compatible with most self-bailing cockpits (2-7/8” diameter) for sailboats, fishing vessels, and luxury yachts etc.