---
product_id: 43884258
title: "385 Toilet Replacement Cap Assembly for 400A Fill Valves, Black, 4.75 x 3.75 x 1.47"
brand: "fluidmaster"
price: "NT$532"
currency: TWD
in_stock: true
url: https://www.desertcart.tw/products/43884258-385-toilet-replacement-cap-assembly-for-400a-fill-valves-black
store_origin: TW
region: Taiwan
---

# Precision fit for Fluidmaster 400A valves Easy, tool-free installation 1-year manufacturer warranty 385 Toilet Replacement Cap Assembly for 400A Fill Valves, Black, 4.75 x 3.75 x 1.47

**Brand:** fluidmaster
**Price:** NT$532
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your flush game with leak-proof confidence!

## Quick Answers

- **What is this?** 385 Toilet Replacement Cap Assembly for 400A Fill Valves, Black, 4.75 x 3.75 x 1.47 by fluidmaster
- **How much does it cost?** NT$532 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/43884258-385-toilet-replacement-cap-assembly-for-400a-fill-valves-black)

## Best For

- fluidmaster enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Warranty:** Backed by a 1-year manufacturer warranty for peace of mind and lasting performance.
- • **Durable Black Finish:** Sleek black-coated plastic resists wear and blends discreetly with your bathroom hardware.
- • **Seamless Compatibility:** Specifically engineered for Fluidmaster 400 series fill valves ensuring a perfect fit every time.
- • **Effortless Installation:** Install in minutes without specialized tools—get your toilet leak-free faster than ever.
- • **Leak-Proof Seal Included:** Comes with a reliable seal to stop leaks at the cap, saving water and headaches.

## Overview

The Fluidmaster 385 Replacement Cap Assembly is a durable, black-coated plastic component designed exclusively for Fluidmaster 400A fill valves. Measuring 4.75 x 3.75 x 1.47 inches, it features threaded 0.5-inch inlet and outlet connections for a secure fit. This easy-to-install cap includes a leak-proof seal and is backed by a 1-year warranty, making it a reliable fix for common toilet fill valve leaks.

## Description

Product Description               Fluidmaster 385 Toilet Replacement Cap Assembly for 400A Fill Valves, Black, 4. 75 x 3. 75 x 1. 47                  From the Manufacturer               Replacement cap for all Fluidmaster 400 series fill valves.

## Features

- Manufactured in china
- Easy to use
- Highly durable
- Includes seal
- Easily installs onto fill valve
- Fixes leaks at cap
- 1 year
- Includes seal
- Easily installs onto fill valve
- Fixes leaks at cap
- 1 year warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Plastic |
| Brand | Fluidmaster |
| Item dimensions L x W x H | 3.75 x 4.75 x 1.47 inches |
| Exterior Finish | Black coated |
| Inlet Connection Size | 0.5 Inches |
| Inlet Connection Type | Threaded |
| Outlet Connection Type | Threaded |
| Number of Ports | 2 |
| Outlet Connection Size | 0.5 Inches |
| Global Trade Identification Number | 00039961803528 |
| Manufacturer | Fluidmaster, Inc. |
| UPC | 039961803528 091712402619 |
| Part Number | 385 |
| Item Weight | 0.64 ounces |
| Product Dimensions | 3.75 x 4.75 x 1.47 inches |
| Item model number | 385 |
| Is Discontinued By Manufacturer | No |
| Size | 4.75 x 3.75 x 1.47" |
| Color | Black |
| Finish | No Finish |
| Shape | Triangle |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Included Components | Toilet Repairs |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | 1 year warranty against manufacturer defect |

## Product Details

- **Material:** Plastic
- **Brand:** Fluidmaster
- **Item dimensions L x W x H:** 3.75 x 4.75 x 1.47 inches
- **Exterior Finish:** Black coated
- **Inlet Connection Size:** 0.5 Inches
- **Inlet Connection Type:** Threaded
- **Outlet Connection Type:** Threaded
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.5 Inches
- **Global Trade Identification Number:** 00039961803528

## Images

![385 Toilet Replacement Cap Assembly for 400A Fill Valves, Black, 4.75 x 3.75 x 1.47 - Image 1](https://m.media-amazon.com/images/I/61PH0e6VVuL.jpg)

## Available Options

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

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**Shop now:** [https://www.desertcart.tw/products/43884258-385-toilet-replacement-cap-assembly-for-400a-fill-valves-black](https://www.desertcart.tw/products/43884258-385-toilet-replacement-cap-assembly-for-400a-fill-valves-black)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-03-13*