---
product_id: 14899689
title: "Kohler Part 85406 2\" Toilet Flush Valve Kit, Colors may vary"
brand: "kohler"
price: "$70.44"
currency: USD
in_stock: true
reviews_count: 13
category: "Kohler"
url: https://www.desertcart.us/products/14899689-kohler-part-85406-2-toilet-flush-valve-kit-colors-may
store_origin: US
region: United States of America
---

# Optimized leak-free flush OEM genuine Kohler part 2-inch flush valve size Kohler Part 85406 2" Toilet Flush Valve Kit, Colors may vary

**Brand:** kohler
**Price:** $70.44
**Availability:** ✅ In Stock

## Summary

> 🚽 Flush like a pro with Kohler’s precision-engineered valve kit!

## Quick Answers

- **What is this?** Kohler Part 85406 2" Toilet Flush Valve Kit, Colors may vary by kohler
- **How much does it cost?** $70.44 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/14899689-kohler-part-85406-2-toilet-flush-valve-kit-colors-may)

## Best For

- kohler enthusiasts

## Why This Product

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

## Key Features

- • **Quick & Easy Upgrade:** Straightforward installation means less downtime and no plumber needed—upgrade your bathroom effortlessly.
- • **OEM Quality Assurance:** Genuine Kohler part ensures durability and hassle-free replacement—no guesswork, no modifications.
- • **Leak-Proof Performance:** Designed to optimize flushing efficiency and prevent leaks, saving water and money.
- • **Complete Installation Kit:** Includes flush valve, 2" flapper, triangle gasket, bolts & washers—everything you need in one box.
- • **Precision Engineered 2" Valve:** Fits perfectly with Kohler Wellworth & Highline models for seamless performance.

## Overview

The Kohler Part 85406 2" Toilet Flush Valve Kit is a genuine OEM replacement designed for Kohler Wellworth, Highline, and other models. It includes a 2-inch flush valve, red flapper, triangle gasket, bolts, and washers, ensuring a perfect fit and leak-free performance. This kit optimizes flushing efficiency and simplifies installation, making it the smart choice for durable, water-saving toilet maintenance.

## Description

Product Description ✅ Kohler Part 85406 2" Toilet Flush Valve Kit, Colors may vary From the Manufacturer Kohler Genuine Part, Flush Valve, Flush Valve.

Review: Quick easy fix and enjoy the quiet again. - Working from home has its perks... one of them is being able to notice all sounds the house makes when it is relatively quiet. You can hear a toilet running over and over pretty easily. It ends up being super annoying. I did the simple changes first, the flusher and the flapper change.... that didn't do it. So got this for my Kohler toilet, fixed immediately! Perfect fit, quick install (if you're a little handy). So, if you can't figure out why your toilet keeps running, just get this part and enjoy the quiet again. Have a good day.
Review: Buy this one - Good replacement, worked as expected. Note, if you are going to buy anything individually in this set, just buy this one. You will be going to the store and buying separate parts one after another, and your costs will be way more than just buying this one.

## Features

- KOHLER GENUINE PART
- Flush valve assembly for Wellworth, Highline and various other KOHLER toilets
- Includes flush valve, 2" flapper, triangle gasket and bolts
- Optimizes toilet flushing performance
- Replaces black flush valve with red flapper
- Also replaces part number 84246

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001EK2864 |
| Best Sellers Rank | #27,486 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #32 in Toilet Flush Valves |
| Brand | Kohler |
| Brand Name | Kohler |
| Connector Type | Barb |
| Customer Reviews | 4.6 out of 5 stars 1,646 Reviews |
| Exterior Finish | Assorted Colors |
| Global Trade Identification Number | 00040688884073 |
| Included Components | KOHLER GENUINE PART 85406 2" Toilet Flush Valve Kit |
| Inlet Connection Size | 2 Inches |
| Inlet Connection Type | Barb |
| Item Dimensions | 11 x 6.5 x 3 inches |
| Item Type Name | KOHLER GENUINE PART 85406 2" Toilet Flush Valve Kit |
| Item Weight | 245 Grams |
| Item dimensions L x W x H | 11 x 6.5 x 3 inches |
| Manufacturer | Kohler |
| Manufacturer Part Number | 85406 |
| Manufacturer Warranty Description | Warranty |
| Material | Brass , Bronze |
| Material Type | Brass, Bronze |
| Model Number | 85406 |
| Number of Pieces | 1 |
| Number of Ports | 2 |
| Outlet Connection Size | 2 Inches |
| Outlet Connection Type | Barb |
| Set Name | Kohler 2" Toilet Flush Valve Kit (4 Piece) |
| Size | Single |
| Smart Home Compatibility | Not Smart Home Compatible |
| Thread Size | 2 inches |
| Thread Type | Standard Pipe Thread |
| UPC | 040688884073 |
| Unit Count | 1.0 Count |
| Valve Type | flush valve |

## Product Details

- **Brand:** Kohler
- **Exterior Finish:** Assorted Colors
- **Global Trade Identification Number:** 00040688884073
- **Inlet Connection Size:** 2 Inches
- **Inlet Connection Type:** Barb
- **Item dimensions L x W x H:** 11 x 6.5 x 3 inches
- **Material:** Brass, Bronze
- **Number of Ports:** 2
- **Outlet Connection Size:** 2 Inches
- **Outlet Connection Type:** Barb

## Images

![Kohler Part 85406 2" Toilet Flush Valve Kit, Colors may vary - Image 1](https://m.media-amazon.com/images/I/51o4HTjY1OL.jpg)
![Kohler Part 85406 2" Toilet Flush Valve Kit, Colors may vary - Image 2](https://m.media-amazon.com/images/I/615nebe2nJL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is the diameter of the flush valve 2"?**
A: not sure about diameter of large tube that goes between tank and bowl.  Seems larger than 2".   Cant really measure since installed. Here is link to picture https://www.plumbingsupply.com/images/kohler-flush-valve-85406.jpg   .   THis is the only one that fits Kohler Highline toilets and worth the price.  Key Is triangular gasket at bottom that only comes with Kolher

**Q: will this fit a 4609 model toilet?**
A: Yes, but if your ballcock is not adjustable style water will over flow the tube. If it is adjustable just change water level to the mark on the tube, or about 3/4 inch below the top of the tube. This item fits most all Kohler tanks with the three bolt configuration.

**Q: I installed this but still have a slow leak from tank into the bowl.  Is the flapper opening the only place water can flow from tank to bowl?**
A: make sure you have the nut tight enough or not over tigthen. Make sure the flapper is coming all the down to seal. Make sure you don't have a cracks .

**Q: Do I have to buy the fill valve too?**
A: If you're already buying the flush valve and the three bolt tank seal, you might as well replace the fill valve also. Replacing those three items will make the toilet like new for many years.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quick easy fix and enjoy the quiet again.
*by G***N on April 1, 2026*

Working from home has its perks... one of them is being able to notice all sounds the house makes when it is relatively quiet. You can hear a toilet running over and over pretty easily. It ends up being super annoying. I did the simple changes first, the flusher and the flapper change.... that didn't do it. So got this for my Kohler toilet, fixed immediately! Perfect fit, quick install (if you're a little handy). So, if you can't figure out why your toilet keeps running, just get this part and enjoy the quiet again. Have a good day.

### ⭐⭐⭐⭐⭐ Buy this one
*by O***3 on April 5, 2026*

Good replacement, worked as expected. Note, if you are going to buy anything individually in this set, just buy this one. You will be going to the store and buying separate parts one after another, and your costs will be way more than just buying this one.

### ⭐⭐⭐⭐⭐ A Great Improvement Over the Old Style GP85160 Flush Ball Kit
*by C***E on November 29, 2020*

Had water leaking into the bowl. Generally, a replacement or thorough cleaning of the flapper will improve this. In my instance, I turned off the water source, flushed the toilet to drain the tank down to the top of the flush assembly. The flush ball was removed to ensure the water was below the top of the flush ball assembly. I then left for a few hours and on my return the tank was totally empty. This pointed to the need to replace the entire flush ball assembly (or maybe just tighten the three tank bolts). The new kit, GP85406, comes with everything you need to ensure the repair is complete. The redesigned rubber gasket is the biggest improvement. The rubber piece no longer interferes with tightening the large retaining nut and you are able to attain a proper seal (Hand tighten until tight and then turn another quarter turn with proper wrench). I reassembled the tank onto the base, and tightened the three new bolts. The new bolts are superior to the old brass screws that required a large flathead screwdriver to hold the bolts in place while tightening the three nuts. The new bolts have caps that allow you to hold them while torquing the nuts on the underside. Like installing a wheel on a car, slightly tighten each bolt and then move across to the next nut and continue slightly tightening each bolt until the tank is secured. Don't fully tighten down one bolt and move to another as this may lead to a cracked tank or bowl. I use a level to ensure the tank remains level as each bolt is slightly tightened. Reattach the water source and fill the tank. I then turn the water source off and monitor the water level to see if it is holding at the fill level. Keeping an eye on the bowl to see if water is trickling in is also advised. However, water will often continue to seep into the bowl for a short while after the tank is filled. Give it time and then check the bowl for water flowing down the interior of the bowl. If the water level in the tank is decreasing, either the flapper is leaking or the tank is not properly seated on the bowl. This is a simple project and the skill level to complete the project is a one or two. Just take your time tightening the three tank bolts and do not rush this part of the project.

## Frequently Bought Together

- Kohler Part 85406 2" Toilet Flush Valve Kit, Colors may vary
- KOHLER Silent Fill Toilet Valve Kit, Genuine Part GP1138930, Adjustable with Multiple Fill-Rate Inserts
- Kohler Genuine Part Gp1083167 Silent Fill Valve Kit For All Kohler Class Five Toilets,12.5" x 3.5" x 3"

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-18*