Best Toilet Flush Valves Under $100 (2026)

Selections were ranked by a value score using user ratings, brand reputation, outlet size/compatibility, adjustability features, and price under $100

Top Picks

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    Kohler 1117210 Flush Valve Kit 1.28

    Kohler 1117210 Flush Valve Kit 1.28

    Kohler • ★ 4.2/5 • Budget

    Kohler flush valve kit for toilet flush valves. Key benefit: reliable replacement part with easy installation. Customer insight: some users report quick installation and good fit, while durability and leakage reliability vary

    • genuine Kohler part
    • easy installation
    • fits Kohler toilets
    Check current price on Amazon →
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    R&T 3-Inch Dual Flush Valve with Top Push Button

    R&T 3-Inch Dual Flush Valve with Top Push Button

    R&T • ★ 4.1/5 • Budget

    Dual flush valve repair kit for 2-piece toilets, featuring a 3-inch outlet and top push button for adjustable water levels. Customers note easy installation and adjustable overflow tube for different tank heights

    • 3-inch drain outlet compatibility
    • top push button dual flush operation
    • adjustable overflow tube and water level
    Check current price on Amazon →
  4. 4
    TOTO adjustable replacement fill valve assembly

    TOTO adjustable replacement fill valve assembly

    TOTO • ★ 4.1/5 • Mid-Range

    Adjustable fill valve compatible with TOTO toilet tanks. Aims to restore optimal tank performance with included components for easy setup. One customer notes quick replacement and good fit with Toto toilets

    • adjustable for all TOTO tanks
    • includes complete installation components
    • restore optimal tank performance
    Check current price on Amazon →
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Buying Guide

Match outlet size

Choose a valve with the same outlet diameter (e.g., 2-inch or 3-inch) as your toilet to ensure proper flush performance and a correct seal

Check compatibility with toilet brand

Select parts from compatible manufacturers or genuine replacement parts when possible to reduce fitment issues and corrosion risk

Consider dual-flush or adjustable options

Dual-flush valves and adjustable fill/flush assemblies help control water usage and let you fine-tune performance for different toilet models

Look for corrosion-resistant materials

Valves and kits labeled as corrosion-resistant or genuine parts typically last longer in mineral-rich water and reduce maintenance

Evaluate included components

Prefer kits that include seals, gaskets, and necessary hardware so you avoid multiple trips and ensure a complete repair