PricepectAI-Verified Comparisons

Comparisons About

⌘K

Pricepect

Independent product comparisons to help you buy smarter.

Browse

Categories
Comparisons
Spec Comparisons
Head-to-Head
Search

Info

About
Privacy Policy
Terms of Service

Top Categories

Electronics
Home & Kitchen
Sports & Outdoors
Automotive

✓ Independent & Unbiased✓ AI-Verified Data✓ Expert-Reviewed

Pricepect participates in the Amazon Services LLC Associates Program. As an Amazon Associate, we earn from qualifying purchases. © 2026 Pricepect. All rights reserved.

Fluidmaster 506 Flapper — Review & Specs | Pricepect | Pricepect

Home Toilet FlappersFluidmaster 506 Flapper

📦

Fluidmaster

Fluidmaster 506 Flapper

$6.48

506Black2x7x6 inches 1 year warranty

Toilet Flappers

Expert Review Analysis

The Fluidmaster 506 is a 2-inch universal flexible frame toilet flapper designed as an all-rubber, non-adjustable replacement part for stopping running toilets in older models. It features a flexible design that fits flush valves with or without mounting ears and is compatible with most 2-inch brass or plastic flush valves across brands. The product includes easy installation instructions and comes with a 1-year warranty.

✓ Best for: Owners of pre-1994 toilets with 3.5+ GPF flush valves needing a quick fix for leaks or running toilets. It is ideal for replacing outdated flappers on 2-inch brass or plastic valves (with or without ears) in high-volume older models, particularly for DIY installs where universal compatibility is prioritized over low-flow efficiency.✗ Not ideal for: Modern low-flow toilets requiring 1.6 GPF or less efficiency. It is not suitable for users seeking precise centering on standard valves who might prefer solid-frame options, nor for those needing adjustable flush tuning capabilities.

Pros

✓Universal fit for most brands and 2-inch flush valves, including those with or without mounting ears
✓Simple and quick installation process with included instructions for DIY users

Best Seller Rank History

Now#103Best#100Worst#133 +30

Lower = better sales rank

Rating Trend

Rating4.3/ 5Reviews725

Specifications

Design

Height152 mm mm

Width51 mm mm

Length178 mm mm

Features

Flush Valve Size2 inches mm

Frame TypeFlexible (all-rubber)

AdjustabilityNon-adjustable

Flush Volume Compatibility3.5+ GPF

Toilet Era CompatibilityPre-1994

General

BrandFluidmaster

Model506

ColorBlack

Warranty1 year

Weight454 g g

Compatibility

Flush Valve Size2 inches (fits most 2” brass and plastic flush valves)

Performance

Flush Volume Compatibility3.5+ gallons per flush (GPF)

Warranty

Coverage Period1-year warranty

Dimensions & Weight

Height6.0 inches

Width2.0 inches

Depth7.0 inches

Weight1.0 Pounds

Research Sources

fluidmaster.com

paulbhardware.com

fluidmaster.com

fluidmaster.com

Similar Products

Eastman 48551 Universal Tank Fiber Strap, 2 inch Toilet Flapper, 2.4 x 2.9 x 4.6, Blue

Eastman 48551 Universal Tank Fiber Strap, 2 inch Toilet Flapper, 2.4 x 2.9 x 4.6, Blue

EZ-FLO

Korky 2017BP Standard 2-Inch 2X Ultra High Performance Universal Long Lasting Rubber-Easy to Install-Made in USA Toilet Flapper, 1 Count (Pack of 1), Red

Korky 2017BP Standard 2-Inch 2X Ultra High Performance Universal Long Lasting Rubber-Easy to Install-Made in USA Toilet Flapper, 1 Count (Pack of 1), Red

Korky

Impresa 3-Pack Toilet Flapper Seal Replacement Kit - Compatible with American Standard 7381424-100.0070A Vormax - Silicone Round Flapper for Toilet Tank - 073380-0070A Silicone Gasket

Impresa 3-Pack Toilet Flapper Seal Replacement Kit - Compatible with American Standard 7381424-100.0070A Vormax - Silicone Round Flapper for Toilet Tank - 073380-0070A Silicone Gasket

IMPRESA

2 Pack 2-Inch Universal Toilet Flapper Replacement Kit - Fits Kohler, Toto, American Standard - High Performance Water-Saving Toilet Tank Flapper with Stainless Chain & Hook, Easy to Install Red

2 Pack 2-Inch Universal Toilet Flapper Replacement Kit - Fits Kohler, Toto, American Standard - High Performance Water-Saving Toilet Tank Flapper with Stainless Chain & Hook, Easy to Install Red

Lydia's Deal

iFealClear Universal Toilet Handle Replacement Kit Front Mount with 2-Inch Rubber Toilet Flapper Replacement, Toilet Tank Parts Compatible with Kohler, American Standard, TOTO, Mansfield, Chrome

iFealClear Universal Toilet Handle Replacement Kit Front Mount with 2-Inch Rubber Toilet Flapper Replacement, Toilet Tank Parts Compatible with Kohler, American Standard, TOTO, Mansfield, Chrome

iFealClear

Gerber Toilet Flapper Replacement, 2 Pack 3 inch for Gerber 99-788 with 2 Toilet Handle Chains Lecyco Rubber Water Saving, Easy to Install 2

Gerber Toilet Flapper Replacement, 2 Pack 3 inch for Gerber 99-788 with 2 Toilet Handle Chains Lecyco Rubber Water Saving, Easy to Install 2

Lceyco

Toilet Flappers Replacement Compatible for GA715014-GEG1 (Transparent) 3 Inch with Stainless Chain and Hook - Reliable Toilet Flapper

Toilet Flappers Replacement Compatible for GA715014-GEG1 (Transparent) 3 Inch with Stainless Chain and Hook - Reliable Toilet Flapper

QILIYINI

3-Inch Toilet Flappers Replaceme...

Universal Toilet Flapper Replacement Kit: 2 Inch Toilet Tank Flapper 2 Stainless Chains Designed for American Standard Kohler Toto Gerber Toilet Stopper Water Saving Easy to Install Heavy Duty Rubber

Universal Toilet Flapper Replacement Kit: 2 Inch Toilet Tank Flapper 2 Stainless Chains Designed for American Standard Kohler Toto Gerber Toilet Stopper Water Saving Easy to Install Heavy Duty Rubber

Forynade

2 Inch Toilet Flapper with Float...

2-Inch Toilet Flapper Replacemen...

Flush Valve Seal for American St...

3.5 Inch Red Solid Silicone Toil...

4Pcs 3 Inch Toilet Flapper Repla...

Toilet Flapper Replacement Kit -...

RV Water Heater Drain Plug Kit I...

4Pcs Flush Valve Seal for Standa...

3pcs Toilet Tank Flapper Replace...

Featured in Comparisons

Best 2‑Inch Universal Toilet Flappers

Best 2‑Inch Universal Toilet Flappers

roundup

Best Budget 2‑Inch Universal Toilet Flappers Under $10

Best Budget 2‑Inch Universal Toilet Flappers Under $10

roundup

Fluidmaster PerforMAX Flapper vs Fluidmaster 506 Flapper

User Reviews

Please sign in to leave a review

Sort by:

No reviews yet. Be the first to review!

4.5

(720 reviews)

✓Flexible all-rubber frame design accommodates oddly sized or angled valves better than rigid types

✓Effectively solves common leaky flapper issues in older high-volume toilets

✓Compatible with both brass and plastic flush valves across various toilet brands

Cons

✗Limited to 3.5+ gallons per flush older toilets and not ideal for modern low-flow models
✗All-rubber flexible style may stretch less consistently than solid-frame alternatives for precise centering
✗Non-adjustable design prevents custom flush tuning for specific water conservation needs
✗Not suitable for modern low-flow toilets requiring 1.6 GPF or less efficiency
✗Lacks the precise centering capabilities found in solid-frame flapper alternatives

From Expert Reviews

Praised by Experts

✓Flexible all-rubber frame suits oddly sized or angled valves better than rigid solid-frame types
✓Universal compatibility allows use on most 2-inch brass and plastic flush valves regardless of brand
✓Designed as a simple and easy-to-install replacement part for older toilet models

Criticized by Experts

✗All-rubber flexible style may stretch less consistently than solid-frame alternatives for precise centering
✗Non-adjustable nature limits its effectiveness for modern low-flow toilet configurations
✗Lacks independent professional review data or quantified expert ratings in available sources

Expert Opinion

Sources lack independent professional reviews or editorials; descriptions are primarily from the manufacturer and retailers. Fluidmaster categorizes the 506 as an all-rubber 2-inch non-adjustable flapper, noting that its flexible frame is specifically designed to suit oddly sized or angled valves better than rigid solid-frame types. It is emphasized as a simple and easy-to-install replacement for older toilets.

What Users Say

No consumer reviews, ratings, or testimonials are included in the available sources. Consequently, common praise such as ease of install and complaints regarding durability cannot be detailed with real user data.

Common Complaints

No direct user complaints are reported in the sources due to the absence of consumer review data.

How It Compares

vs. Fluidmaster Solid Frame Examples (500, 501, 502)

Advantages

✓Flexible frame accommodates oddly sized or angled valves better than rigid solid-frame types

Disadvantages

✗All-rubber flexible style may stretch less consistently than solid-frame alternatives for precise centering

Choose the 506 for irregular or angled valves, but select solid-frame models for consistent sealing on standard valves.

vs. Fluidmaster All-Rubber Adjustable (5051)

Advantages

✓Universal fit for most brands and 2-inch flush valves, including those with or without mounting ears

Disadvantages

✗Non-adjustable design prevents custom flush tuning for specific water conservation needs

Choose the 506 for universal compatibility on older high-volume toilets, but select the 5051 for custom flush tuning.

pairwise

Fluidmaster 506 Flapper vs Korky 100BP

pairwise

Kohler GP85160 vs Fluidmaster 506 Flapper

pairwise

Kohler GP1078440 vs Fluidmaster 506 Flapper

pairwise

Fluidmaster 506 Flapper vs Lydia's Deal 2-inch Toilet Flapper Red

pairwise

Fluidmaster 500 Flapper vs Fluidmaster 506 Flapper

pairwise

Fluidmaster 506 Flapper vs Qualihome 3-inch Toilet Flapper

pairwise