--- product_id: 394722684 title: "316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047)" brand: "seaworthy innovations" price: "FREE" currency: EUR in_stock: false url: https://www.desertcart.hr/products/394722684-316-stainless-steel-boat-scupper-assembly-with-hinged-stainless-flapper store_origin: HR region: Croatia --- # Superior Silicone Seal Precision Screw Hole Orientation 316 Stainless Steel Durability 316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047) **Brand:** seaworthy innovations **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > ⚓ Upgrade your boat’s drainage game with seaworthy style and unbeatable reliability! ## Quick Answers - **What is this?** 316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047) by seaworthy innovations - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/394722684-316-stainless-steel-boat-scupper-assembly-with-hinged-stainless-flapper) ## Best For - seaworthy innovations enthusiasts ## Why This Product - Trusted seaworthy innovations brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Custom Fit Assurance:** Multiple screw hole orientations ensure seamless compatibility with your vessel’s unique setup—no guesswork needed. - • **Leak-Proof Innovation:** Enhanced silicone seal and hinged flapper deliver superior water-tight performance, eliminating annoying drips and leaks. - • **Lightweight & Compact:** At just 231 grams and slim dimensions, it installs effortlessly without adding bulk or weight to your boat. - • **Marine-Grade Strength:** Crafted from premium 316 stainless steel for unmatched corrosion resistance and longevity on the water. - • **Sleek & Durable Design:** Polished stainless steel frame elevates your boat’s aesthetic while outlasting plastic and rubber alternatives. ## Overview The Seaworthy Innovations 316 Stainless Steel Boat Scupper Assembly (P/N SW1047) features a robust marine-grade stainless steel frame, hinged flapper, and silicone seal for superior leak protection and durability. Designed with multiple screw hole orientations for easy installation, this lightweight and corrosion-resistant assembly enhances both function and appearance on any boat. ## Description SW1047 is a direct replacement scupper for most boats that currently have the standard round plastic frame scupper with a rubber flapper. It has a 1.625” thru hole which is larger than the common plastic frame version which has a 1.375” thru hole. This means ours will fit over standard flared brass drain tubes (usually a 1.5” flare). The 1.625” thru hole and free swinging door also allows for quicker deck drainage. Notes: Transom mount only. Please see our recessed scupper for port or starboard mounting applications. Scuppers must be mounted above the waterline or paired with a drainage system that is above the waterline. Marine grade sealant (not included) may be required to seal the screw holes and backplate to the boat. ## Features - SW1047 is intended for boats with nearly vertical transoms. Please utilize SW1143 if your transom has an angle over 6 degrees. SW1143 incorporates a wedge component so the scupper will rest in the closed position. - The supplied screws are marine grade 316 stainless steel with excellent rust resistance. Stainless steel screws however may shear or break easier than non-marine srews. We highly recommend using hand tools for installation and drilling a pilot hole if needed for the screw holes. excessive force will also deposit iron from the hand tool which could result in superficial rust marks. - 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) - 316 Stainless Steel Frame, Flapper, Backplate, and Screws (4x) with Silicone Seal. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09K8V3ZJ1 | | Batteries Included? | No | | Best Sellers Rank | #165,396 in Sporting Goods ( See Top 100 in Sporting Goods ) #377 in Boat Deck Hardware | | Brand | SEAWORTHY INNOVATIONS | | Customer Reviews | 4.0 4.0 out of 5 stars (33) | | Date First Available | 1 October 2021 | | Manufacturer | Seaworthy Innovations | | Product Dimensions | 17.78 x 12.7 x 2.54 cm; 231 g | ## Images ![316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047) - Image 1](https://m.media-amazon.com/images/I/41i27fboecL.jpg) ## Questions & Answers **Q: Can you side mount these? My 1987 contender has rubber flappers like this but on sides of boat, not the transom.** A: Hi Ashley, This is intended for transom mount only. We are launching another version in 2 weeks which is intended for Port and Starboard Mount. Please contact us via our website and we can assist further. Best, Mike Engineer Seaworthy Innovations **Q: what is the OD ? and bolt circle dim. ?** A: Hello, Dimensions are hidden in the 4th picture. We will update the ad to add the dimensions in text as well. 3.12" OD with 2.31" circle pattern for screws. Thank you! Mike Engineer Seaworthy Innovations **Q: is there one or two in the package** A: Hello, These are sold individually. **Q: Where would I buy silicone seal replacement for this product** A: Hello, Silicone is a very stable material in the marine environment unlike other rubbers that are used with traditional rubber flapper scuppers. Our seal is also protected from UV light by the stainless steel door. It is designed to last a very long time. However, if replacement is ever needed, simply reach out to Seaworthy Innovations directly via our website. Best, Mike Engineer Seaworthy Innovations ## Frequently Bought Together - SEAWORTHY INNOVATIONS 316 Stainless Steel Boat Scupper Assembly with Hinged Stainless Flapper (P/N SW1047) - 3M Marine Adhesive Sealant Fast Cure 5200 (05220) Permanent Bonding and Sealing for Boats and RVs Above and Below the Waterline Waterproof Repair, White, 3 fl oz Tube --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/394722684-316-stainless-steel-boat-scupper-assembly-with-hinged-stainless-flapper](https://www.desertcart.hr/products/394722684-316-stainless-steel-boat-scupper-assembly-with-hinged-stainless-flapper) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-09-07*