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Best Toilet Repair Kits (2026 Guide)

We selected kits based on aggregate user ratings, review volume, compatibility with common toilet and flushometer specifications, and inclusion of comprehensive replacement parts

This page lists top-rated toilet repair kits for residential and commercial flushing systems, chosen for high user ratings and review volume. Picks prioritize durable components, compatibility with common flushometer and 3-inch toilet configurations, and clear installation guidance

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 your flush type

Choose a diaphragm rebuild kit for flushometer systems and a 3-inch or universal-fit kit for gravity-fed toilets to ensure correct parts and fit

Check GPF compatibility

Select a kit rated for your fixture's gallons-per-flush (1.6 GPF, 3.5 GPF, 0–5 GPF) so seals and diaphragms perform properly with the intended flow

Prefer brand-tested components

Established valve manufacturers like Sloan and Fluidmaster supply parts engineered for their systems, improving fit and longevity

Assess included parts

Look for kits that include seals, diaphragms, gaskets, and any small hardware needed for a full rebuild to avoid multiple purchases

Consider ease of installation

Kits with clear instructions and common replacement parts reduce repair time and the likelihood of follow-up service calls