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Top 10 Best Toilet Tank Replacement Parts Reviews & Comparison | Updated

Visit our site to find reviews on toilet tank replacement parts. We have the top best toilet tank replacement parts comparison 2026 and you can make an informed decision!

That’s why we’ve taken 79118 reviews from top experts and organized them according to our rankings for you. 

Bestseller No. 1
Fluidmaster 400ARHRKP10 PerforMAX Universal High Performance All in One Repair Kit for 2-Inch Flush Valve Toilets, Easy Install
  • PREMIUM TOILET PERFORMANCE: All in one toilet repair kit replaces inefficient fill and flush valves, leaky flappers, and broken toilet handles to make your toilet run like new
  • UNIVERSAL DESIGN: PerforMAX toilet fill valve with 2X greater refill rate adjusts easily from 10 – 15 inches and is ideal for use in high efficiency 1.28 to 1.6 gallons per flush toilets
  • HIGH PERFORMANCE FLAPPER: PerforMAX 507AK high performance 2-inch adjustable water-saving toilet flapper eliminates twisting and ghost flushing to maximize water usage with each flush, Deteriorating or damaged flush valve
  • EASY INSTALLATION: Easily installs in 10 minutes or less to get your toilet flushing like new again
  • Effectively control fill and flush volume, while upgrading toilet parts
Bestseller No. 2
Fluidmaster 400H-002 Performax Universal Toilet Fill Valve High Performance Tank and Bowl Water Control, 1-Pack, Multicolor
  • Fix noisy, or slow filling fill valves with the quietest, most powerful toilet fill valve available
  • Easy to install, step-by-step instructions included
  • Universal fit for most toilet models and brands
  • Tank and Bowl water level adjustment dials to customize the perfect flush and save. EZ-Twist height adjusts from 9 in. to 14 in. to fit more tanks
Bestseller No. 3
Korky Ultra Standard 2-Inch Universal Toilet Flapper - Long Lasting Rubber - Easy to Install - Made in USA, 100BP
  • TOILET FLAPPER VALVE FITS MOST POPULAR 2 inch toilet brands including, but not limited to: American Standard, Kohler, Mansfield, & TOTO – Replaces popular rubber, float-style and rigid frame flappers.
  • MOST UNIVERSAL the High Performance Toilet Flapper is the most universal 2 inch flapper available. Adjusts to fit all tank sizes: 1.28, 1.6, 3.5 and 5 gallon per flush toilets
  • MADE IN USA - Toilet parts flapper is proudly made in America and backed by a 5 year warranty.
  • HIGH QUALITY REPLACEMENT TOILET PARTS: Need to repair or replace toilet parts? Try Korky Toilet Repair because we continue to commit to designing toilet repair parts that are universal to fit the majority of toilets. Designed & manufactured in Wisconsin. Flapper made of chlorine resistant rubber
  • QUICKLY FIX running and leaking toilets and eliminate costly water waste.
Bestseller No. 4
Fluidmaster 502P21 PerforMAX Universal Water-Saving Long Life Toilet Flapper for 2-Inch Flush Valves, Adjustable Solid Frame Design, Easy Install, Red, 1 pack
  • 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
Bestseller No. 5
Fluidmaster K-400H-039 High Performance Toilet Fill Valve with 2-Inch Adjustable Toilet Flapper Kit
  • The PerforMAX fill valve and 2 in. Flapper Kit is the premium solution to make your 2 in. flush valve toilet run like new
  • PerforMAX toilet fill valve offers high performance with adjustable tank and bowl water for full water control
  • Fast and Easy to Install
  • PerforMAX Water-Saving Toilet Flapper included to save water use per flush
  • Adjustable fill valve height to fit more tanks, corrosion resistant flapper, Solid frame for a secure seal, 7 year warranty
Bestseller No. 6
Danco Complete Toilet Repair Kit, Fill Valve, Flapper, Rod, Float Replacement (80816), White
  • TOILET REPAIR KIT: The Danco Toilet Repair Kit includes replacement parts for the most common toilet parts that cause a leaky toilet and will restore your toilet to its original working condition.
  • TOILET FILL VALVE DIMENSIONS: The fill valve height is approximately 8.5 inches from the bottom of inside the tank.
  • TOILET BALL ROD FLOAT & BALL FLOT DIMENSIONS: The length of the brass rod is 7.75” and the length of the float is 5.5”; when the brass road is threaded into both the float and threaded into the fill valve, the total length of the rod and float ends up being about 11.75”.
  • TOILET FLAPPER DIMENSIONS: The toilet flapper is ideal to replace worn-out flappers and is designed to fit 2 in. toilet flush valves.
  • EASY TO INSTALL: Includes easy to follow installation instructions. Complete this DIY Project with common household tools such as screwdriver and adjustable wrench.
Bestseller No. 7
Fluidmaster K-400H-021-P8 PerforMAX 2-Inch Everything Toilet Repair Kit, Multicolor
  • The Everything Kit includes everything you need to fix your toilet in one trip and one purchase
Bestseller No. 8
Fluidmaster 507AKP7 PerforMAX Universal High Performance 2-Inch Toilet Flush Valve Repair Kit with Gasket and Bolts
  • Quick, easy to install
  • Replaces any 2 inch flush valve in a two-piece toilet
  • Saves water and Stops leaks at the drain
Bestseller No. 9
Kohler Genuine Part Gp1083167 Silent Fill Valve Kit For All Kohler Class Five Toilets,12.5" x 3.5" x 3"
  • Protect the warranty on KOHLER products, always look for the KOHLER GENUINE PARTS logo
  • Adjustable fill valve. Valve Type: Manual
  • Look at shank color to determine correct part; if black, use this part and if grey, use GP1138930
  • Cap color may vary
Bestseller No. 10
Fluidmaster 400A Anti-Siphon Universal Toilet Tank Fill Valve,Black
  • fluidmaster400a anti-siphon toilet fill valve - fm400a
  • This is highly durable
  • This is manufactured in MEXICO

With our guide, you can find the best toilet tank replacement parts available on the e-commerce market. We make use of Big Data and AI data to compile this list, so it is highly accurate.

The process of creating this content was challenging, but our team persevered through it to bring you the best possible results. We read user reviews and look at what buyers think about each product so that your buying experience will be satisfying.

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