---
product_id: 19887001
title: "Kohler K83664 Flush Valve Kit"
brand: "kohler"
price: "S$61"
currency: SGD
in_stock: true
reviews_count: 12
category: "Kohler"
url: https://www.desertcart.sg/products/19887001-kohler-k83664-flush-valve-kit
store_origin: SG
region: Singapore
---

# One-time use sponge washer Precision fit & lock mechanism Solid brass durability Kohler K83664 Flush Valve Kit

**Brand:** kohler
**Price:** S$61
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your flush game with Kohler’s precision-engineered valve kit!

## Quick Answers

- **What is this?** Kohler K83664 Flush Valve Kit by kohler
- **How much does it cost?** S$61 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/19887001-kohler-k83664-flush-valve-kit)

## 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

- • **Precision Locking Mechanism:** Innovative triad spur design guarantees a secure, leak-proof fit every time.
- • **Optimized Sponge-Washer Seal:** Engineered for a perfect compression seal—replace after each service for flawless performance.
- • **Built to Last with Solid Brass:** Premium corrosion-resistant brass ensures longevity and reliability in your plumbing system.
- • **Easy Installation with Pro Tips:** Follow the exact orientation and rotation steps to avoid common pitfalls and ensure a perfect fit.
- • **Genuine Kohler Quality & Warranty:** Backed by a one-year limited warranty and trusted by professionals worldwide.

## Overview

The Kohler K83664 Flush Valve Kit is a genuine, solid brass plumbing repair part designed for durability and precision. Featuring a unique triad spur locking system and a specially engineered sponge washer for optimal sealing, this kit ensures a reliable flush valve replacement. Ideal for professionals and DIYers alike, it comes with a one-year limited warranty and clear installation instructions to guarantee a perfect fit and leak-free performance.

## Description

Product Description Kohler K83664 Flush Valve Kit From the Manufacturer This service kit is a Kohler Genuine Part. It has a one-year limited warranty. Constructed of solid brass.

Review: It works if you follow the directions, especially as they apply to the sponge-ring-washer orientation - Follow the instructions, particularly those on which side of the large sponge-like washer to have facing up. What is intuitive (or might be intuitive) relative to what you think is right for that washer is wrong. Then pay attention how to insert this assembly relative to the triad of spurs that hold it in place, the force to push it fully down (more force than you might think compressing that sponge-washer), and finally the clocking (rotating) to where it holds in place. Those little triangle feet and the compressed sponge-washer hold this puppy in place pretty firmly if you get it right. Obviously for it to end up in the right position after rotation you have to shove it in so that when you clock (rotate) it, it locks pointed in the desired position. Done properly what seems at the beginning like a mickey mouse attachment is actually fairly simple and strong design. Do not coat the sponge-washer with anything. Hint: In my opinion depending on your water type (mineral/chemical content) this sponge is only good for one go-round, do not try to reuse it. The plastic housing could last a lifetime, the flapper may need replacement at some point, but absolutely replace the sponge anytime you have had to handle, move, or remove this assembly. The sponge-washer works because of it's compression when new, but it tends to hold that compressed position and for that reason re-use is ill-advised.
Review: Perfect fit. - Not as difficult to install as I was led to believe. Shut off water supply, flush, vac or sponge remaining water, take a before photo, unhook flapper chain from flush arm, remove old flapper, remove old unit by pushing down and turning clockwise 40 degrees, clean surface, remove new gasket and apply olive oil liberally to all sides of new gasket, reinstall new gasket, clean hands for firm grip, install new unit by pushing down and turning counterclockwise about 40 degrees, install flapper and chain, turn on water supply, fill tank and test.

## Features

- Country Of Origin: China
- Model Number: K83664
- Item Package Dimensions: 7.25" L x 5.0" W x 4.0" H
- Item Package Weight: 0.464 lb

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002C1HQC0 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #166,181 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #230 in Toilet Flush Valves #14,689 in Kitchen & Bath Fixtures |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (293) |
| Date First Available | May 29, 2009 |
| Included Components | Flush Valve |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 7.2 ounces |
| Item model number | K83664 |
| Manufacturer | Kohler |
| Material | Brass |
| Part Number | 83664 |
| Product Dimensions | 0.46 x 9.07 x 7.07 inches |

## Images

![Kohler K83664 Flush Valve Kit - Image 1](https://m.media-amazon.com/images/I/411CabzYZoL.jpg)
![Kohler K83664 Flush Valve Kit - Image 2](https://m.media-amazon.com/images/I/617pOPjCqXL.jpg)

## Questions & Answers

**Q: Does the kit include gasket?**
A: Yes it does, no need to buy a separate one.

**Q: Will this fit for kohler k3402bp?**
A: I checked on the Kohler web site and it looks like it would be compatible.  This flush valve style was used in several older model Kohler toilets.

**Q: How is this removed and replaced from the toilet?  Does it need a special tool?**
A: No special tool, just wide pliers.

**Q: Hello. this part can replace for kohler toilet memoirs series model # k 3453, correct size 3” flush valve kit.**
A: No.  This is an older and smaller model.  It will not fit.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works if you follow the directions, especially as they apply to the sponge-ring-washer orientation
*by D***N on March 23, 2016*

Follow the instructions, particularly those on which side of the large sponge-like washer to have facing up. What is intuitive (or might be intuitive) relative to what you think is right for that washer is wrong. Then pay attention how to insert this assembly relative to the triad of spurs that hold it in place, the force to push it fully down (more force than you might think compressing that sponge-washer), and finally the clocking (rotating) to where it holds in place. Those little triangle feet and the compressed sponge-washer hold this puppy in place pretty firmly if you get it right. Obviously for it to end up in the right position after rotation you have to shove it in so that when you clock (rotate) it, it locks pointed in the desired position. Done properly what seems at the beginning like a mickey mouse attachment is actually fairly simple and strong design. Do not coat the sponge-washer with anything. Hint: In my opinion depending on your water type (mineral/chemical content) this sponge is only good for one go-round, do not try to reuse it. The plastic housing could last a lifetime, the flapper may need replacement at some point, but absolutely replace the sponge anytime you have had to handle, move, or remove this assembly. The sponge-washer works because of it's compression when new, but it tends to hold that compressed position and for that reason re-use is ill-advised.

### ⭐⭐⭐⭐⭐ Perfect fit.
*by W***L on December 29, 2024*

Not as difficult to install as I was led to believe. Shut off water supply, flush, vac or sponge remaining water, take a before photo, unhook flapper chain from flush arm, remove old flapper, remove old unit by pushing down and turning clockwise 40 degrees, clean surface, remove new gasket and apply olive oil liberally to all sides of new gasket, reinstall new gasket, clean hands for firm grip, install new unit by pushing down and turning counterclockwise about 40 degrees, install flapper and chain, turn on water supply, fill tank and test.

### ⭐⭐⭐⭐⭐ Exactly what I needed
*by L***. on June 27, 2023*

Needed to fix my mother in laws toilet, which had been running almsot continuously for weeks because my brother in law isn't handy.....neither is my husband! She has the k3434 Rosario toilet, can't find pieces in any old store (a reason I'll NEVER buy one of these fancy toilets for my own house). I didn't want to replace this whole assembly, her old flapper valve was all corroded and gross so I figured that's all we needed. I bought this whole thing In case I was wrong, since you can't just buy this anywhere. Well, flapper is all she needed, I popped the old one off, separated the new one and put it on the old fill tube and voila! Toilet works properly again. I'm keeping the new fill tube in case we need it later but hoping not. I also couldn't confirm whether this worked for the Rosario, so if that's your question you can know the flapper valve is definitely the same! I'm sire the rest is a match too. And I got a genuine Kohler part, too

## Frequently Bought Together

- Kohler K83664 Flush Valve Kit
- KOHLER Silent Fill Toilet Valve Kit, Genuine Part GP1138930, Adjustable with Multiple Fill-Rate Inserts
- Kohler GP83888 Gasket for Some Toilets

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-01-25*