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Best Toilet Repair Kits Under $100 (2026)

We ranked toilet repair kits under $100 by value score using brand reliability, parts completeness, compatibility (3-inch vs flushometer), user ratings, and price

Top Picks

  1. 1
    Fluidmaster PerforMAX 3 in. Everything Toilet repair kit

    Fluidmaster PerforMAX 3 in. Everything Toilet repair kit

    Fluidmaster • ★ 3.8/5 • Budget

    Repair kit for 3 in. flush valve toilets with universal fit and included tools. Quick and easy installation with adjustable components; kit replaces multiple parts for a unified repair. Customer notes ease of installation and functional improvement

    • universal 3 in. flush valve compatibility
    • includes install tools
    • adjustable water-use and height
    Check current price on Amazon →
  2. 2
  3. 3
    Sloan A-1106-A Urinal Diaphragm Rebuild Kit (0.5 GPF)

    Sloan A-1106-A Urinal Diaphragm Rebuild Kit (0.5 GPF)

    Sloan • ★ 3.6/5 • Mid-Range

    Sloan A-1106-A diaphragm rebuild kit for Royal flushometers with 0.5 GPF. Includes components for rebuild and features a chloramine-resistant PERMEX rubber diaphragm. Customer notes it fits well, is easy to install, and provides complete repair parts

    • PERMEX rubber diaphragm
    • chloramine resistance
    • genuine Sloan parts
    Check current price on Amazon →
  4. 4
  5. 5
    Sloan A-1101-A Royal Diaphragm Rebuild Kit (1.6 GPF)

    Sloan A-1101-A Royal Diaphragm Rebuild Kit (1.6 GPF)

    Sloan Valve • ★ 3.5/5 • Mid-Range

    Diaphragm rebuild kit for Sloan Royal flushometers with 1.6 GPF. Includes necessary components for a repair; features a PERMEX synthetic rubber diaphragm with a filtered bypass. Customers note easy installation and complete kit for repair

    • permex rubber diaphragm
    • compatibility with Sloan Royal line
    • genuine Sloan parts
    Check current price on Amazon →
  6. 6
    Korky 3-inch Toilet Repair Kit

    Korky 3-inch Toilet Repair Kit

    Korky • ★ 3.4/5 • Budget

    Complete toilet repair kit for running, noisy, no/slow refill, and no/weak flush toilets. Easy to install and compatible with typical toilets; does not fit Kohler or 1-piece toilets

    • all-in-one kit
    • easy installation
    • covers multiple toilet issues
    Check current price on Amazon →

Buying Guide

Match kit to flush type

Confirm whether you need a 3-inch flush valve kit for residential toilets or a diaphragm rebuild kit for Royal flushometers to ensure fit and function

Check included parts

Look for kits that include both valve and seal components (valves, diaphragms, gaskets, and flappers) to avoid multiple purchases during repairs

Prioritize brand OEM compatibility

Choose trusted manufacturers like Fluidmaster or Sloan when seeking parts compatible with specific toilet models or commercial flushometers

Consider water-use rating

Select diaphragms and rebuild kits that match your fixture’s gallons-per-flush (e.g., 1.6 GPF or 3.5 GPF) to maintain designed flow and comply with plumbing standards

Assess ease of installation

Prefer kits described as ‘everything’ or rebuild kits with clear instructions and common tools compatibility to reduce repair time and complexity