---
product_id: 433282441
title: "Fluidmaster K-400H-040-T5 PerforMAX Fill Valve and 3-Inch Flapper Toilet Repair Kit, Multicolor"
brand: "fluidmaster"
price: "¥9131"
currency: JPY
in_stock: true
reviews_count: 13
category: "Fluidmaster"
url: https://www.desertcart.jp/products/433282441-fluidmaster-k-400h-040-t5-performax-fill-valve-and-3
store_origin: JP
region: Japan
---

# Adjustable water flow control 10-minute quick install Universal 3-inch flush valve fit Fluidmaster K-400H-040-T5 PerforMAX Fill Valve and 3-Inch Flapper Toilet Repair Kit, Multicolor

**Brand:** fluidmaster
**Price:** ¥9131
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your throne with pro-level ease and efficiency!

## Quick Answers

- **What is this?** Fluidmaster K-400H-040-T5 PerforMAX Fill Valve and 3-Inch Flapper Toilet Repair Kit, Multicolor by fluidmaster
- **How much does it cost?** ¥9131 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/433282441-fluidmaster-k-400h-040-t5-performax-fill-valve-and-3)

## 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

- • **Built to Last:** Durable plated plastic construction backed by a 7-year limited warranty.
- • **Precision Water Flow:** Adjust the fill valve for optimal tank refill speed and water efficiency.
- • **Effortless DIY Upgrade:** Replace your faulty fill valve in just 10 minutes—no plumber needed, no hassle.
- • **Smooth & Reliable Flush:** 3-inch PerforMAX flapper ensures a consistent, leak-free flush every time.
- • **Universal Compatibility:** Designed to fit all 3-inch flush valve toilets for seamless integration.

## Overview

The Fluidmaster K-400H-040-T5 PerforMAX Fill Valve and 3-Inch Flapper Toilet Repair Kit offers a universal, easy-to-install solution to restore your toilet’s flush performance. Featuring adjustable water flow and a smooth-operating flapper, this kit fits all 3-inch flush valve toilets and is built with durable materials, backed by a 7-year warranty. Save time and costly plumber fees with this trusted, top-ranked plumbing repair kit.

## Description

Fluidmaster K-400H-040-T5 PerforMAX Fill Valve and 3-Inch Flapper Toilet Repair Kit, Multicolor

Review: Does the job, easy replacement for faulty fill valve - OEM fill valve on my Gerber toilet would fail to run and fill the holding tank intermittently after a flush, so it was time to replace it. The Fluidmaster has very straightforward installation instructions, it's about a 10 minute job at most. Save yourself the $350-$400 plumber bill and replace the fill valve yourself...most 3rd graders could probably handle the installation of a new fill valve and flapper. The adjustable water flow is a nice bonus but most will probably find the max setting is the best option. The flapper is nice as well....seems to operate more smoothly than the 3rd-party Korky flappers I've used in the past. Just make sure you have a bucket handy and drain the holding tank as much as possible before removing your old fill valve, or you'll be mopping up a lot of water. Overall, easy replacement, reasonably priced, no complaints.
Review: Well proven and did not disappoint - I've used Fluidmaster for many years because their product is quality and easy to install. What else is needed?

## Features

- The PerforMAX fill valve and 3 in. Flapper Kit is the top solution to make your 3 in. flush valve toilet run like new!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09NYKZ1FH |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #7,781 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4 in Toilet Repair Kits |
| Brand | Fluidmaster |
| Color | Multicolor |
| Customer Reviews | 4.6 4.6 out of 5 stars (648) |
| Date First Available | September 8, 2021 |
| Exterior Finish | Plated/Coated Plastic |
| Global Trade Identification Number | 00039961031822 |
| Included Components | PerforMAX Toilet Fill Valve, 3-Inch Flapper |
| Inlet Connection Size | 2 Inches |
| Inlet Connection Type | Threaded |
| Installation Method | Toilet |
| Item Package Quantity | 1 |
| Item Weight | 14.9 ounces |
| Item dimensions L x W x H | 3.74 x 6.89 x 14.37 inches |
| Item model number | K-400H-040-T5 |
| Manufacturer | Fluidmaster |
| Material | Plastic |
| Number Of Pieces | 2 |
| Outlet Connection Size | 2 Inches |
| Outlet Connection Type | threaded connection |
| Part Number | K-400H-040-T5 |
| Product Dimensions | 3.74 x 6.89 x 14.37 inches |
| Size | Universal, for 3 In. |
| Specification Met | ASME B16.34, UPC, WaterSense |
| UPC | 039961031822 |
| Usage | Inside; Amateur, Inside; Professional |
| Warranty Description | 7 Year Limited |

## Product Details

- **Brand:** Fluidmaster
- **Exterior Finish:** Plated/Coated Plastic
- **Global Trade Identification Number:** 00039961031822
- **Inlet Connection Size:** 2 Inches
- **Inlet Connection Type:** Threaded
- **Item dimensions L x W x H:** 3.74 x 6.89 x 14.37 inches
- **Material:** Plastic
- **Outlet Connection Size:** 2 Inches
- **Outlet Connection Type:** threaded connection
- **Specification Met:** ASME B16.34, UPC, WaterSense

## Images

![Fluidmaster K-400H-040-T5 PerforMAX Fill Valve and 3-Inch Flapper Toilet Repair Kit, Multicolor - Image 1](https://m.media-amazon.com/images/I/7188xFATjmL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does this work on American Standard 4215A**
A: The American Standard 4215A is the "Champion 4" model toilet and this kit is not recommended. We do recommend Fluidmaster's K-400H-001-P5 Performax High Performance Toilet Fill Specialty Flush Valve Seals Repair Kit for the Champion 4, on Amazon.  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: Is flapper a fit for penguin model 524? (2-piece elongated 1.28 gpf)**
A: Yes the Penguin model you noted does use a 3 inch flush system and this kit will replace both the fill and flapper original to your toilet. For further questions contact Fluidmaster, we can be reached at fluidmaster.com/support for chat and email or toll free at 1-800-631-2011. We are available Monday thru Friday 5:30 am - 5:00 pm PST.

**Q: Can it work with toilet kohler GP87449? If not which one does please?**
A: when you purchase the product description should provide as list

**Q: Does this work on American Standard 4021N?**
A: The fill valve should work, but this unit has a 3 inch flapper which may not be compatible with your 4021N. Measure the flapper diameter and go from there.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does the job, easy replacement for faulty fill valve
*by C***Y on October 5, 2025*

OEM fill valve on my Gerber toilet would fail to run and fill the holding tank intermittently after a flush, so it was time to replace it. The Fluidmaster has very straightforward installation instructions, it's about a 10 minute job at most. Save yourself the $350-$400 plumber bill and replace the fill valve yourself...most 3rd graders could probably handle the installation of a new fill valve and flapper. The adjustable water flow is a nice bonus but most will probably find the max setting is the best option. The flapper is nice as well....seems to operate more smoothly than the 3rd-party Korky flappers I've used in the past. Just make sure you have a bucket handy and drain the holding tank as much as possible before removing your old fill valve, or you'll be mopping up a lot of water. Overall, easy replacement, reasonably priced, no complaints.

### ⭐⭐⭐⭐⭐ Well proven and did not disappoint
*by R***. on December 10, 2025*

I've used Fluidmaster for many years because their product is quality and easy to install. What else is needed?

### ⭐⭐⭐⭐⭐ Great installation instructions!
*by P***A on January 19, 2026*

I was able to easily change this myself (59 year old woman). Excellent directions and minimal parts to deal with. Solved my perpetually running toilet problem perfectly!

## Frequently Bought Together

- Fluidmaster K-400H-040-T5 PerforMAX Fill Valve and 3-Inch Flapper Toilet Repair Kit, Multicolor
- Fluidmaster 5403 3-Inch Water Saving Long Life Toilet Flapper
- Fluidmaster 400H-002 Performax Universal Toilet Fill Valve High Performance Tank and Bowl Water Control, 1-Pack, Multicolor

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-08*