---
product_id: 295886560
title: "Fluidmaster 502P21 Universal Flapper with Microban, Red"
brand: "fluidmaster"
price: "SAR 83"
currency: SAR
in_stock: true
reviews_count: 5
category: "Fluidmaster"
url: https://www.desertcart.com.sa/products/295886560-fluidmaster-502p21-universal-flapper-with-microban-red
store_origin: SA
region: Saudi Arabia
---

# Adjustable flush dial for water savings Microban antimicrobial corrosion resistance Universal 2-inch fit for easy replacement Fluidmaster 502P21 Universal Flapper with Microban, Red

**Brand:** fluidmaster
**Price:** SAR 83
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your flush game with the ultimate water-saving flapper!

## Quick Answers

- **What is this?** Fluidmaster 502P21 Universal Flapper with Microban, Red by fluidmaster
- **How much does it cost?** SAR 83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/295886560-fluidmaster-502p21-universal-flapper-with-microban-red)

## 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

- • **Microban Protection:** Advanced antimicrobial material resists corrosion and bacteria, extending product life and hygiene.
- • **DIY Friendly Installation:** Get your toilet optimized in under 10 minutes with a straightforward, tool-free setup.
- • **Flush Smarter, Not Harder:** Dial in your perfect flush to save water and cut costs without sacrificing performance.
- • **Universal Fit, Zero Hassle:** Fits most 2-inch flush valves, making upgrades and repairs seamless for any bathroom.
- • **Built to Last, Built to Seal:** Rigid solid frame prevents twisting and ghost flushing, ensuring a leak-proof seal every time.

## Overview

The Fluidmaster 502P21 Universal Flapper with Microban is a durable, corrosion-resistant toilet flapper designed to fit most 2-inch flush valves. Featuring an adjustable dial for optimal water efficiency, it prevents common issues like ghost flushing and leaks. Constructed with antimicrobial Microban material and a solid frame, it ensures long-lasting performance and easy installation in under 10 minutes, backed by a 5-year warranty.

## Description

Save on water, money, and time with the Fluidmaster 502P21 PerforMAX Universal Water-Saving Toilet Flapper, a top choice for flush efficiency and solving common running toilet problems. The PerforMAX water saving adjustable dial design optimizes your flush performance and water use. Built durable for a long life, this flapper is constructed with corrosive resistant Microban materials and a solid frame that won’t bend for a secure seal. A universal design that fits most 2-inch flush valve models, it’s best used with high efficiency 1.28 and 1.6 gallons per flush toilets and can work with 3.5 gallons per flush toilets. This highly efficient design also features simple and easy installation, saving on DIY toilet repair time and costs. The Fluidmaster 502P21 PerforMAX Universal Water-Saving Toilet Flapper comes with a 5-year warranty.

Review: Fixed My Constantly Running Toilet Immediately - I bought this because one of our toilets would randomly keep running and it was driving me insane. I kept jiggling the handle, adjusting things inside the tank, and trying temporary fixes until I finally decided to just replace the flapper. Problem solved immediately. Installation was straightforward and only took a few minutes. Once installed, the toilet stopped constantly running and has been working normally ever since. Sometimes it’s amazing how such a small inexpensive part can completely fix an issue that’s wasting water and becoming annoying every single day. The material feels much better than some of the cheap generic flappers I’ve used in the past and it created a solid seal right away without needing a bunch of tweaking or adjustment. Honestly, if your toilet keeps randomly running or cycling on and off, there’s a good chance your flapper is the issue and this was an easy inexpensive fix that worked perfectly for me.
Review: Works perfectly! - It is exactly as depicted. The plastic is fairly thick for what it is, so considering its placement I think it will last a very very long time. The one we had prior was entirely made of rubber and it had sagged and torn over time, leaving an endless flow of water that racked up an extra $50/m on our city bill. Putting this on was SUPER easy, I am a woman (and certainly not a plumber) and I had no problem clicking it into place or attaching the chain to the lever. I love the price, very fair. As mentioned, the top cap is plastic, but I find that beneficial. Firstly, it will not sag as the old one did. Secondly, it makes movement easy, as its quick to lift and quick to drop. Mind you this toilet is in my young children's room, so they need something that doesnt require excess effort to flush. Highly recommend.

## Features

- LONG-LASTING DURABILITY: Toilet flapper with solid frame replaces leaky, corroded flappers, preventing twisting, ghost flushing, and running toilet problems
- UNIVERSAL DESIGN: Adjustable flapper fits most 2-inch flush valve toilets and is ideal for use in high efficiency 1.28 to 3.5 gallons per flush toilets
- ADJUSTABLE TO SAVE WATER: Dial flapper adjusts for maximum flush efficiency and to save water
- CORROSION RESISTANT: Solid frame 502 2-inch flapper features corrosion-resistant Microban material to prevent breakdown and leaks due to bacteria and chlorine and is chlorine and hard water resistant
- EASY INSTALLATION: Easily installs in 10 minutes or less to optimize flushing performance; 5 YEAR WARRANTY
- Adjusts for maximum flush efficiency
- Fixes most common cause of a running toilet
- Rigid frame aligns flapper properly on every flush
- Micro ban prevents growth of harmful microbes

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BVS3H0 |
| Best Sellers Rank | #105,558 in Home Improvement ( See Top 100 in Home Improvement ) #2 in Toilet Flappers |
| Brand | Fluidmaster |
| Brand Name | Fluidmaster |
| Connector Type | Mechanical |
| Country of Publication | USA |
| Customer Reviews | 4.6 out of 5 stars 19,309 Reviews |
| Exterior Finish | Red |
| Global Trade Identification Number | 00039961005021 |
| Included Components | 502P21 ADJUST-A-FLUSH TOILET FLAPPER |
| Inlet Connection Size | 2 Inches |
| Inlet Connection Type | Flange |
| Item Dimensions | 12.4 x 8.9 x 8.9 Centimeters |
| Item Type Name | Water-Saving Long Life Toilet Flapper for 2-Inch Flush Valves, Adjustable Solid Frame Design, Easy Install |
| Item Weight | 23 g |
| Item dimensions L x W x H | 12.4 x 8.9 x 8.9 Centimeters |
| Manufacturer | Fluidmaster |
| Manufacturer Part Number | 502P21 |
| Material | Metal |
| Material Type | Metal |
| Model Number | 502P21 |
| Number of Pieces | 1 |
| Outlet Connection Size | 2 Inches |
| Outlet Connection Type | Barb |
| Size | 1 Pack |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specification Met | CE, UL, WaterSense |
| UPC | 039961005021 |
| Unit Count | 1.0 Count |
| Valve Type | flapper |

## Product Details

- **Material:** Rubber
- **Brand:** Fluidmaster
- **Item dimensions L x W x H:** 12.4 x 8.9 x 8.9 Centimeters
- **Inlet Connection Size:** 2 Inches
- **Inlet Connection Type:** Flange
- **Outlet Connection Type:** Barb
- **Outlet Connection Size:** 2 Inches
- **Specification Met:** CE, UL, WaterSense
- **Global Trade Identification Number:** 00039961005021
- **Manufacturer:** Fluidmaster

## Images

![Fluidmaster 502P21 Universal Flapper with Microban, Red - Image 1](https://m.media-amazon.com/images/I/61luZUJw5EL.jpg)
![Fluidmaster 502P21 Universal Flapper with Microban, Red - Image 2](https://m.media-amazon.com/images/I/41QTlviig1L.jpg)
![Fluidmaster 502P21 Universal Flapper with Microban, Red - Image 3](https://m.media-amazon.com/images/I/51I17uyAcVL.jpg)
![Fluidmaster 502P21 Universal Flapper with Microban, Red - Image 4](https://m.media-amazon.com/images/I/81TAsDSyHOL.jpg)
![Fluidmaster 502P21 Universal Flapper with Microban, Red - Image 5](https://m.media-amazon.com/images/I/81887F0gXIL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fixed My Constantly Running Toilet Immediately
*by J***. on 14 May 2026*

I bought this because one of our toilets would randomly keep running and it was driving me insane. I kept jiggling the handle, adjusting things inside the tank, and trying temporary fixes until I finally decided to just replace the flapper. Problem solved immediately. Installation was straightforward and only took a few minutes. Once installed, the toilet stopped constantly running and has been working normally ever since. Sometimes it’s amazing how such a small inexpensive part can completely fix an issue that’s wasting water and becoming annoying every single day. The material feels much better than some of the cheap generic flappers I’ve used in the past and it created a solid seal right away without needing a bunch of tweaking or adjustment. Honestly, if your toilet keeps randomly running or cycling on and off, there’s a good chance your flapper is the issue and this was an easy inexpensive fix that worked perfectly for me.

### ⭐⭐⭐⭐⭐ Works perfectly!
*by I***E on 16 January 2025*

It is exactly as depicted. The plastic is fairly thick for what it is, so considering its placement I think it will last a very very long time. The one we had prior was entirely made of rubber and it had sagged and torn over time, leaving an endless flow of water that racked up an extra $50/m on our city bill. Putting this on was SUPER easy, I am a woman (and certainly not a plumber) and I had no problem clicking it into place or attaching the chain to the lever. I love the price, very fair. As mentioned, the top cap is plastic, but I find that beneficial. Firstly, it will not sag as the old one did. Secondly, it makes movement easy, as its quick to lift and quick to drop. Mind you this toilet is in my young children's room, so they need something that doesnt require excess effort to flush. Highly recommend.

### ⭐⭐⭐⭐⭐ Buen producto
*by A***A on 22 December 2024*

Le quedo muy bien al tanque de agua . No hemos tenido problemas , fácil instalación

## Frequently Bought Together

- Fluidmaster 502P21 PerforMAX Universal Water-Saving Long Life Toilet Flapper for 2-Inch Flush Valves, Adjustable Solid Frame Design, Easy Install, Red, 1 pack
- Fluidmaster 400H-002 Performax Universal Toilet Fill Valve High Performance Tank and Bowl Water Control, 1-Pack, Multicolor
- Fluidmaster K-400H-039 High Performance Toilet Fill Valve with 2-Inch Adjustable Toilet Flapper Kit

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*Product available on Desertcart Saudi Arabia*
*Store origin: SA*
*Last updated: 2026-06-06*