---
product_id: 433282442
title: "Fluidmaster K-400H-039 Toilet Fill Valve & 2-Inch Flapper Repair Kit | Includes high-performance fill valve and adjustable 2 in. flapper, Helps fix running or slow-filling toilets"
brand: "fluidmaster"
price: "160.62 DT"
currency: TND
in_stock: true
category: "Fluidmaster"
url: https://www.desertcart.tn/products/433282442-fluidmaster-k-400h-039-toilet-fill-valve-and-2-inch
store_origin: TN
region: Tunisia
---

# 2-inch adjustable flapper fits universal flush valves PerforMAX fill valve for precision flow control 7-year limited warranty ensures long-term reliability Fluidmaster K-400H-039 Toilet Fill Valve & 2-Inch Flapper Repair Kit | Includes high-performance fill valve and adjustable 2 in. flapper, Helps fix running or slow-filling toilets

**Brand:** fluidmaster
**Price:** 160.62 DT
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your flush game — because your throne deserves the best!

## Quick Answers

- **What is this?** Fluidmaster K-400H-039 Toilet Fill Valve & 2-Inch Flapper Repair Kit | Includes high-performance fill valve and adjustable 2 in. flapper, Helps fix running or slow-filling toilets by fluidmaster
- **How much does it cost?** 160.62 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/433282442-fluidmaster-k-400h-039-toilet-fill-valve-and-2-inch)

## 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

- • **Top-Rated & Trusted:** Join thousands of satisfied users with a 4.6-star rating and #2 rank in toilet flappers.
- • **Durability Meets Design:** Crafted from high-quality plastic with a robust 7-year warranty for peace of mind.
- • **Pressure-Ready Engineering:** Operates reliably under pressures up to 80 psi, perfect for any home setup.
- • **Precision Performance Upgrade:** Restore your toilet’s flush efficiency with the advanced PerforMAX fill valve.
- • **Universal Fit, Effortless Install:** Designed for 2-inch flush valves, this kit fits most toilets seamlessly.

## Overview

The Fluidmaster K-400H-039 Toilet Fill Valve & 2-Inch Flapper Repair Kit combines the innovative PerforMAX fill valve with a universal 2-inch adjustable flapper, designed to restore and enhance toilet performance. Engineered for durability with a 7-year warranty and capable of handling up to 80 psi, this kit is a top-rated, easy-to-install solution trusted by thousands to keep their bathrooms running smoothly.

## Description

Fluidmaster K-400H-039 High Performance Toilet Fill Valve with 2-Inch Adjustable Toilet Flapper Kit

## Features

- Includes a PerforMAX fill valve and 2 in. flapper kit designed to restore the performance of toilets with a 2 in. flush valve by replacing worn or outdated components.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09NYLJ1FZ |
| Best Sellers Rank | #438 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Toilet Flappers |
| Brand Name | Fluidmaster |
| Connector Type | Female Iron Pipe, FNPT |
| Customer Reviews | 4.6 4.6 out of 5 stars (4,408) |
| Exterior Finish | Plastic |
| Global Trade Identification Number | 00039961031815 |
| Included Components | PerforMAX Toilet Fill Valve, 2-Inch Flapper |
| Inlet Connection Size | 2 inches |
| Inlet Connection Type | Female Iron Pipe |
| Item Dimensions | 3.54 x 6.3 x 2.38 inches |
| Item Type Name | Toilet Repair Kit |
| Item Weight | 13.6 ounces |
| Manufacturer | Fluidmaster |
| Manufacturer Part Number | K-400H-039-T14 |
| Manufacturer Warranty Description | 7 Year Limited |
| Material Type | Plastic |
| Maximum Pressure | 80 psi |
| Model Number | K-400H-039-T14 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Ports | 2 |
| Outlet Connection Size | 2 inches |
| Outlet Connection Type | FNPT |
| Set Name | SET |
| Size | Universal, for 2 In. |
| Specification Met | CSA, ULC |
| Thread Size | 2 inches |
| Thread Type | NPT |
| UPC | 039961031815 |
| Unit Count | 1 Count |
| Valve Type | PerforMAX Toilet Fill Valve |

## Product Details

- **Brand:** Fluidmaster
- **Exterior Finish:** Plastic
- **Inlet Connection Size:** 2 inches
- **Inlet Connection Type:** Female Iron Pipe
- **Item dimensions L x W x H:** 3.54 x 6.3 x 2.38 inches
- **Material:** Plastic
- **Maximum Operating Pressure:** 80 psi
- **Number of Ports:** 2
- **Outlet Connection Size:** 2 inches
- **Outlet Connection Type:** FNPT

## Images

![Fluidmaster K-400H-039 Toilet Fill Valve & 2-Inch Flapper Repair Kit | Includes high-performance fill valve and adjustable 2 in. flapper, Helps fix running or slow-filling toilets - Image 1](https://m.media-amazon.com/images/I/71FddZ8DTML.jpg)

## Available Options

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

## Questions & Answers

**Q: will this replace a 400A on an american standard 4392?**
A: Yes this will replace the 400A and flapper that is in that model of tank. For more information please contact Fluidmaster’s Technical Service Department, we are available Monday through Friday from 5:30 AM through 5:00 PM Pacific Standard Time. Contact options include: Chat www.fluidmaster.com/support E-Mail techsupport@fluidmaster.com and Toll Free 800-631-2011.

**Q: My new one leaks a little when you flush. Under the blue cap just a few drops than it stops leaking. Is this a normal release of water when flushed ?**
A: I would have been thrilled if mine had only leaked a few drops.  Mine sprayed water like a fire hose so I returned it.

**Q: Will this fit a Kohler 1.6 gallon toilet?**
A: I see no reason why not, unless your tank is too low to put the tank lid or cover back on. check height of fill valve and tank depth

**Q: Does this work with the toilets that does not have handles.. we have the one where you have to push the button in the center top of the tank.. Thanks**
A: The part you are buying is the tube that refills the tank after the flush has occurred.  Whether the flush is because of a handle or a button on the top of the tank. this unit is is separate from that action.  The flapper valve included may or may not work with your tank but the unit itself to fill the tank over and over will work just fine.

## Frequently Bought Together

- Fluidmaster K-400H-039 High Performance Toilet Fill Valve with 2-Inch Adjustable Toilet Flapper Kit
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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-21*