Best Toilet Replacement Parts (2026 Guide)
Selections were made by combining high average ratings and large review volumes, emphasizing brand compatibility, part type coverage, and documented user reliability
The Verdict
- Best Overall: Sloan A-1001-A Diaphragm Rebuild Kit for Regal Flushometers — Ideal rebuild kit for Regal flushometers: includes diaphragm parts designed to restore reliable flush performance
- Best Value: Sloan Urinal Diaphragm Assembly 1.0 GPF (A-1042-A) for Royal Flushometers — Best for Royal urinals requiring a 1.0 GPF diaphragm assembly to restore consistent urinal flushing
This guide covers top-rated toilet replacement parts for flushometers, fill valves, canister seals and deodorizer filters, chosen for high user ratings and substantial review volume. Picks prioritize compatibility, part type (diaphragm, cartridge, seal, filter, fill valve), and proven performance in commercial and residential toilets
Top Picks
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1
Best Overall Sloan A-1001-A Diaphragm Rebuild Kit for Regal Flushometers
Ideal rebuild kit for Regal flushometers: includes diaphragm parts designed to restore reliable flush performance
Diaphragm rebuild kit for Sloan Regal flushometers with 4.5 GPF. Includes parts for a successful install and optimized water usage. Customers note easy installation and good value, with some reports of leakage concerns
- complete parts kit
- water-saving design
- easy installation
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2
Replacement flush valve cartridge kit for Flushmate 503H
Good choice for Flushmate pressure-assisted systems needing a replacement flush valve cartridge compatible with 503H models
Replacement flush valve cartridge kit designed for Flushmate systems, delivering regulated water flow for consistent performance. Includes duckbill valve, filter screen & lower supply filter for easy maintenance. Customers note ease of installation and clear instructions
- regulated GPF for consistent flush
- includes complete valve cartridge kit
- corrosion-resistant construction
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3
Best Value Sloan Urinal Diaphragm Assembly 1.0 GPF (A-1042-A) for Royal Flushometers
Best for Royal urinals requiring a 1.0 GPF diaphragm assembly to restore consistent urinal flushing
Sloan urinal diaphragm assembly with PERMEX synthetic rubber and dual-filtered bypass ensures consistent flush. Replacement for Royal Flushometers; helps limit water usage and maintain proper flushing
- PERMEX diaphragm
- dual-filtered bypass
- designed for Royal Flushometers
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4
Sloan Royal Urinal Diaphragm Tune-Up Kit 1.5 GPF
Useful tune-up kit for Royal urinals offering a 1.5 GPF diaphragm set for maintenance and quick repairs
Sloan Royal urinal diaphragm tune-up repair kit for 1.5 GPF flushometers. Improves efficiency and water usage; users note a good fit and value for money
- complete diaphragm assembly kit
- water-usage reduction design
- compatibility with Sloan Royal 1.5 GPF
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5
Kohler GP1059291 Toilet Tank Canister Valve Seal 6-pk
Practical option for Kohler canister-style tanks, providing multiple replacement seals to address leaking canisters
Kohler genuine part GP1059291 seal set for toilet tank canisters. Yellow seal resists wear from chemicals and use. customers note easy installation
- genuine Kohler part
- yellow seal for leak resistance
- 6-pack value
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6
Sloan Royal Water Closet Diaphragm Assembly (1.28 GPF) for Royal Flushometers
Suitable for Royal water closets needing a 1.28 GPF diaphragm assembly to maintain proper flush volume
Replacement diaphragm assembly for Sloan Royal flushometers with PERMEX rubber and dual-filtered bypass. Designed to ensure consistent flush amounts and reduce water waste. Customer note: high-quality fit and good value
- PERMEX diaphragm material
- dual-filtered bypass
- designed for consistent flush
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7
Sloan Royal Diaphragm Assembly 3.5 GPF for Royal Flushometers
Appropriate for Royal flushometers that require a 3.5 GPF diaphragm assembly for higher-flow applications
Diaphragm assembly kit with PERMEX synthetic rubber and dual-filtered bypass for Royal Flushometers. Designed to replace worn diaphragms and optimize flush accuracy. Customer notes good quality, perfect fit, and value
- PERMEX diaphragm material
- Dual-filtered bypass
- Royal Flushometer compatibility
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8
Sloan A-1050-A High Efficiency Urinal Diaphragm Assembly
Designed for high-efficiency urinals, this diaphragm assembly supports water-saving configurations in Royal systems
The Sloan A-1050-A urinal diaphragm assembly replaces worn units and features a Dual-Filtered Fixed Bypass for controlled flushes. It is designed as a replacement part for Royal Flushometers; ensures consistent flushing and improved water efficiency
- dual-filtered fixed bypass
- OEM replacement part
- designed for consistent flushes
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9
Washlet deodorizer carbon filter for Toto THU6474-01/THU6072
Handy activated-carbon deodorizer for Toto washlets to reduce odors in compatible THU models
deodorizer cartridge with activated carbon filter for Toto washlets; helps reduce odors and keep bathroom smelling fresh. customers note good fit and odor control, with mixed views on lifespan
- activated carbon deodorizing filter
- compatible with multiple Toto washlets
- 3-6 month replacement guideline
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10
Saillong 12-Pack Toilet Fill Valve Replacement
Versatile option as a universal, height-adjustable fill valve pack suitable for varied tank heights and quiet filling
Universal toilet fill valve replacement kit with height adjustment and quiet operation. Easy to install and refills quickly, with automatic shutoff to avoid overflow. Customers note good build quality and fit, with mixed feedback on adjustability
- universal G15/16" inlet compatibility
- 813'' height adjustment
- quiet, automatic refill