---
product_id: 1961199
title: "Attwood 3876-3 Boat Self-Bailing Cockpit Mounted Scupper Valve Kit"
brand: "attwood"
price: "฿1304"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/1961199-attwood-3876-3-boat-self-bailing-cockpit-mounted-scupper-valve
store_origin: TH
region: Thailand
---

# 2-inch thru-hull fitting compatibility Self-bailing flapper valve prevents backflow Durable acetal material & brass finish Attwood 3876-3 Boat Self-Bailing Cockpit Mounted Scupper Valve Kit

**Brand:** attwood
**Price:** ฿1304
**Availability:** ✅ In Stock

## Summary

> 🚤 Keep your boat dry and ready—never miss a wave!

## Quick Answers

- **What is this?** Attwood 3876-3 Boat Self-Bailing Cockpit Mounted Scupper Valve Kit by attwood
- **How much does it cost?** ฿1304 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/1961199-attwood-3876-3-boat-self-bailing-cockpit-mounted-scupper-valve)

## Best For

- attwood enthusiasts

## Why This Product

- Trusted attwood brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Universal Fit:** Mounts easily over existing 2-inch thru-hull fittings for seamless upgrades
- • **Backflow Prevention:** Rubber flapper valve closes tight to stop water from washing back in
- • **Versatile Installation:** Can be mounted on transom above waterline or as a thru-hull cockpit drain
- • **Corrosion-Resistant Build:** Brass finish and acetal components ensure long-lasting marine durability
- • **Effortless Water Drainage:** Keeps your cockpit dry with a smart self-bailing valve system

## Overview

The Attwood 3876-3 Scupper Valve Kit is a precision-engineered marine accessory designed to efficiently drain water from self-bailing cockpits. Featuring a durable acetal body with a corrosion-resistant brass finish, it fits over 2-inch thru-hull fittings and includes a rubber flapper valve that prevents backflow. Easy to install on transoms or as thru-hull drains, this kit ensures your boat stays dry and seaworthy with trusted Attwood quality.

## Description

3876-3 Boat Self-Bailing Cockpit Mounted Scupper Valve Kit

## Features

- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Acetal |
| Brand | attwood |
| Item dimensions L x W x H | 4.5 x 9.25 x 3.5 inches |
| Exterior Finish | Brass |
| Inlet Connection Size | 2 Inches |
| Inlet Connection Type | Female Iron Pipe |
| Number of Ports | 2 |
| Valve Type | check valve |
| Global Trade Identification Number | 00022697387639 |
| Manufacturer | Attwood |
| UPC | 022697387639 |
| Part Number | 3876-3 |
| Item Weight | 1.76 ounces |
| Product Dimensions | 4.5 x 9.25 x 3.5 inches |
| Item model number | 3876-3 |
| Is Discontinued By Manufacturer | No |
| Size | One Size |
| Color | Unspecified |
| Item Package Quantity | 1 |
| Included Components | End Product & Information |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Acetal
- **Brand:** attwood
- **Item dimensions L x W x H:** 4.5 x 9.25 x 3.5 inches
- **Exterior Finish:** Brass
- **Inlet Connection Size:** 2 Inches
- **Inlet Connection Type:** Female Iron Pipe
- **Number of Ports:** 2
- **Valve Type:** check valve
- **Global Trade Identification Number:** 00022697387639
- **Manufacturer:** Attwood

## Images

![Attwood 3876-3 Boat Self-Bailing Cockpit Mounted Scupper Valve Kit - Image 1](https://m.media-amazon.com/images/I/51qv0Wi95pL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Are the screws stainless steel or zinc plated?**
A: Yes the screws provided are stainless steel.

**Q: does this product come with plastic ring, scupper, gasket and mounting screws?**
A: The kit I bought had 3 different sized gaskets, but none fit the original ring so I returned it for a full refund - I assume it was intended for a different manufacturer.

**Q: My 96 sea-do speedster scupper outlet is on the transom at or just below the water line.  does attwood make a product for under water use?**
A: No

**Q: Does this come with one or two valves?**
A: Comes with one valve.

## Frequently Bought Together

- Attwood 3876-3 Boat Self-Bailing Cockpit Mounted Scupper Valve Kit
- 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
- SeaSense Cockpit Scupper Valve Od (2-7/8- Inch)

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**Shop now:** [https://www.desertcart.co.th/products/1961199-attwood-3876-3-boat-self-bailing-cockpit-mounted-scupper-valve](https://www.desertcart.co.th/products/1961199-attwood-3876-3-boat-self-bailing-cockpit-mounted-scupper-valve)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-28*