The Fluidmaster K-400H-043-T4 is a premium, all-in-one toilet repair kit designed to solve the most common toilet issues—noisy operation, continuous running, and weak flushing—quickly and efficiently. Featuring the Performax® high-performance fill valve and the Super Flapper®, this kit offers universal compatibility, water-saving adjustability, and industry-leading durability for both older and modern toilets.

Key Features:

• 🚽 Universal Compatibility: Fits most toilet models and brands with 2" or 3" flush valves, including Kohler, American Standard, and Toto. No guesswork—just reliable performance.
• 🔧 Dual-Size Super Flapper®: Converts easily between 2" and 3" configurations using color-coded seals, making it ideal for both legacy 3.5 GPF toilets and newer 1.28 or 1.6 GPF models.
• 💧 Performax® Fill Valve: Delivers 2X greater bowl refill than standard valves for a more powerful flush. Anti-siphon design ensures quiet, fast tank recovery and clean operation.
• 🎛️ Water-Saving Adjustability: Both the fill valve and flapper feature dial-controlled flow settings, allowing users to fine-tune water usage for optimal flush performance or conservation.
• 🧰 Quick & Easy Installation: Installs in under 15 minutes with no tools required. Includes all necessary hardware and a step-by-step instruction guide.
• 🛡️ Built for Durability: Made from chlorine- and hard water-resistant materials to withstand harsh conditions and extend product life—ideal for high-traffic bathrooms and rental properties.
• ✅ Code-Compliant & Eco-Friendly: Helps meet local water usage codes and reduce utility bills without sacrificing flush power.

Specifications:

• Model: K-400H-043-T4
• Flapper Type: Adjustable 2" and 3" universal fit
• Fill Valve Type: PRO Series 400H (anti-siphon, adjustable height)
• Material: Chlorine- and hard water-resistant rubber & plastic
• GPF Compatibility: 1.28, 1.6, and 3.5 gallons per flush
• Installation Time: ~15 minutes
• Warranty: 5-Year Limited
• UPC: 039961035950
• Prop 65 Warning: Contains materials known to the State of California to cause cancer or reproductive harm

Kit Includes:

• Performax® Fill Valve
• Super Flapper® (2"/3" convertible)
• Chain, refill tube, and installation hardware
• Instruction guide

Ideal For:

• DIY homeowners looking for a fast, reliable toilet fix
• Property managers seeking standardized, universal repair kits
• Eco-conscious users aiming to reduce water waste
• Plumbers and contractors needing a trusted, versatile solution