---
product_id: 569611011
title: "C-100500-K C-100500-Kit Replacement Cartridge Kit Flush Valve Cartridge Assembly Kit Compatible with m-101526-f3 503 504 Cartridge, White, 1 Pack"
brand: "saiyugty"
price: "$81.28"
currency: USD
in_stock: true
reviews_count: 8
category: "Saiyugty"
url: https://www.desertcart.us/products/569611011-c-100500-k-c-100500-kit-replacement-cartridge-kit-flush
store_origin: US
region: United States of America
---

# Tool-free easy install Universal flush valve fit Durable ABS build C-100500-K C-100500-Kit Replacement Cartridge Kit Flush Valve Cartridge Assembly Kit Compatible with m-101526-f3 503 504 Cartridge, White, 1 Pack

**Brand:** saiyugty
**Price:** $81.28
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** C-100500-K C-100500-Kit Replacement Cartridge Kit Flush Valve Cartridge Assembly Kit Compatible with m-101526-f3 503 504 Cartridge, White, 1 Pack by saiyugty
- **How much does it cost?** $81.28 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/569611011-c-100500-k-c-100500-kit-replacement-cartridge-kit-flush)

## Best For

- saiyugty enthusiasts

## Why This Product

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

## Key Features

- • **Tested & Trusted:** Exceeds OEM standards with rigorous quality checks for reliable flush every time.
- • **Premium Durability:** Crafted from heat- and wear-resistant ABS for long-lasting performance.
- • **Effortless Installation:** Swap your flush valve in minutes—no special tools needed, just plug and play.
- • **Universal Compatibility:** Fits 500, 501, 503, 504 series tanks—one kit to rule them all.
- • **Complete Kit Convenience:** Includes Duckbill Valve, Filter Screen & Cartridge Assembly—everything you need in one pack.

## Overview

The C-100500-K Replacement Flush Valve Cartridge Kit is a high-quality, ABS-made assembly compatible with multiple Flushmate tank series (500, 501, 503, 504). Designed for easy, tool-free installation, it includes all essential components like the Duckbill Valve and Filter Screen. Tested beyond OEM standards, this kit ensures durable, efficient flushing performance, making it a smart, cost-effective upgrade for pressure-assist toilets.

## Description

C-100500-K C-100500-Kit Replacement Cartridge Kit Flush Valve Cartridge Assembly Kit Compatible with m-101526-f3 503 504 Cartridge, White, 1 Pack - desertcart.com

Review: Works just as advertised - I just followed the manual so RTFM (read the factory manual) after a few turns and tries the toilet stopped running. pretty much you start screwing the valve into the flushometer, then you open the toilet shut off and keep turning the valve until it pressurizes. I has to do it like 2 times to get it to work and now the toilet works normal. I'm going to check how long it takes until this needs to be replaced but good product overall
Review: Good value replacement cartridge kit for Flushmate toilet - Edit: As karma would have it, the day after I write this review, the cartridge has issues and water is flooding through and over it causing a leak under my toilet. Had to shut the water off and decided to re-order the official OEM part. So much for this experiment, and outside my return window. My flushmate was having issues where after flushing, the water refill wouldn't stop until I fidgeted around w/ the cartridge. Eventually started looking around for a replacement cartridge. Looking at the manufacturer's website, it was fairly pricey so off to desertcart to search for an alternative when I ran into this. Was priced better so I gave it a shot. Installation was straight forward just following the instructions. You use the end of your pliers to tighten it as instructed until you stopped hearing the water filling. All worked well for about 2-3 weeks when the problem started happening again. Again, the water would only stop after fidgeting with the cartridge. Luckly it happened in less than a month where I had the opportunity to file a replacement with desertcart. Replaced the replacement and everything has been working for the past few months so this is great. Again, just lucky enough I was able to get the replacement replaced within the right amount of time, which is why I docked 1 star. Otherwise, I would recommend this replacement cartridge over the official one.

## Features

- 【Replace】 The C-100500-K Replacement Flush Valve Cartridge Assembly is for Power Flush Toilet Replacement Part. The C-100500-K Flush Cartridge Kit Compatible with M-101526-F3, M-101526-F4 Pressure Assist Tank.
- 【Compatible】The Model C-100500-K Flush Valve Cartridge Assembly Compatible with 500, 501, 501A, 501B, 503 and 504 Series Tank Systems. I - 501/501A, II - 501B, III - 503, IV - 504 series of toilet.
- 【Upgraded】The Flush Cartridge Kit is made of durable ABS materials, cost-effective and good value for money, the Flush valve cartridge assembly is after strict quality inspection and testing before leaving factory, exceed OEM manufacturing requirements, package include Duckbill Valve, Filter Screen, Cartridge Assembly.
- 【Easy to install】 The C-100500-K Cartridge Kit is easy to install, no special tools are required, remove the old Flush Cartridge and replace new Flush Valve Cartridge Assembly C-100500. The Cartridge Parts is made of high quality material, heat resistance, wear resistance, more durable and have a longer service life. Please Wear work gloves to protect your hands before install.
- 【Excellent Flush Valve Cartridge】This C-100500 Replacement Cartridge Part.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJ28HK6Q |
| Best Sellers Rank | #71,232 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #93 in Toilet Flush Valves |
| Brand | Saiyugty |
| Customer Reviews | 3.7 3.7 out of 5 stars (121) |
| Date First Available | September 28, 2023 |
| Inlet Connection Size | 2 Inches |
| Inlet Connection Type | Solvent |
| Item Weight | 12 ounces |
| Item model number | C-100500-K |
| Manufacturer | Saiyugty |
| Material | Acrylonitrile Butadiene Styrene |
| Number of Ports | 2 |
| Outlet Connection Type | NPT |
| Package Dimensions | 10.08 x 3.11 x 2.95 inches |

## Product Details

- **Brand:** Saiyugty
- **Inlet Connection Size:** 2 Inches
- **Inlet Connection Type:** Solvent
- **Manufacturer:** Saiyugty
- **Material:** Acrylonitrile Butadiene Styrene
- **Number of Ports:** 2
- **Outlet Connection Type:** NPT

## Images

![C-100500-K C-100500-Kit Replacement Cartridge Kit Flush Valve Cartridge Assembly Kit Compatible with m-101526-f3 503 504 Cartridge, White, 1 Pack - Image 1](https://m.media-amazon.com/images/I/51L18eTMwIL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Questions & Answers

**Q: I'm not sure if this product is suitable for my machine?**
A: You can send your machine model to us, we will search for the right part number for you, and help you confirm whether it is suitable.

**Q: If I am not satisfied with the product I bought, can I return it?**
A: Yes. we provide 90-day return service.

**Q: Why choose Saiyugty?**
A: We have 10 years manufacturer experience in the repair part category and are committed to making safe, comfortable and durable replacement parts. Our excellent quality and perfect after-sales service can give you a better shopping experience.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works just as advertised
*by M***S on March 3, 2024*

I just followed the manual so RTFM (read the factory manual) after a few turns and tries the toilet stopped running. pretty much you start screwing the valve into the flushometer, then you open the toilet shut off and keep turning the valve until it pressurizes. I has to do it like 2 times to get it to work and now the toilet works normal. I'm going to check how long it takes until this needs to be replaced but good product overall

### ⭐ Good value replacement cartridge kit for Flushmate toilet
*by C***. on March 12, 2024*

Edit: As karma would have it, the day after I write this review, the cartridge has issues and water is flooding through and over it causing a leak under my toilet. Had to shut the water off and decided to re-order the official OEM part. So much for this experiment, and outside my return window. My flushmate was having issues where after flushing, the water refill wouldn't stop until I fidgeted around w/ the cartridge. Eventually started looking around for a replacement cartridge. Looking at the manufacturer's website, it was fairly pricey so off to Amazon to search for an alternative when I ran into this. Was priced better so I gave it a shot. Installation was straight forward just following the instructions. You use the end of your pliers to tighten it as instructed until you stopped hearing the water filling. All worked well for about 2-3 weeks when the problem started happening again. Again, the water would only stop after fidgeting with the cartridge. Luckly it happened in less than a month where I had the opportunity to file a replacement with Amazon. Replaced the replacement and everything has been working for the past few months so this is great. Again, just lucky enough I was able to get the replacement replaced within the right amount of time, which is why I docked 1 star. Otherwise, I would recommend this replacement cartridge over the official one.

### ⭐⭐⭐⭐⭐ Perfect Fit and Excellent Instructions
*by P***0 on December 7, 2025*

Worked perfectly to get our flush mate working again. Includes all parts needed to fix 90% of plumbing issues with these pressurized toilet systems. I consider the excellent printed instructions to be a nice bonus. Installation took less than 15 minutes.

## Frequently Bought Together

- C-100500-K C-100500-Kit Replacement Cartridge Kit Flush Valve Cartridge Assembly Kit for m-101526-f3 503 504 Cartridge, White, 1 Pack
- Flushmate M-101526-F31 FM III 503 Pressure Assist tank less Handle for most OEM 2 piece toilets using Flushmate
- Flushmate 9 in x 7 in x 3 in Black Plastic Powder Coated Wrench for Cartridge Removal

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-04-27*