Universal 2/3 in. Toilet Flapper & Fill Valve Kit

Updated August 15, 2026

Condition: NEW CANCELED DELIVERY Brand: Fluidmaster Model: K-400H-043-T4 UPC: 039961035950 The Fluidmaster K-400H-043 Universal Performax toilet fill valve with 2 in. & 3 in. Super Flapper is the newest kit with the most technologically advanced universal toilet flapper and fill valve on the market. This 2-Piece kit is the best solution to fix noisy, running toilets. It takes all the guess work and uncertainty out of deciding what pieces or sizes of flappers to buy to fix your toilet. This is the only toilet repair kit you need. The Performax fill valve sets the standard for performance and is quick and easy to install. It is the most powerful fill valve on the market with 2X greater bowl refill for a more powerful flush. Toilet flush systems have different size flappers, the Super Flapper is the go-to choice, taking the guessing out of knowing what size flapper you need. This Super Flapper can be converted to a 2 in. toilet flapper or a 3 in. toilet flapper. It is quick to convert and easy to install. Both the flapper and the fill valve have water adjustment features with easy to turn dials that allow you to control and customize the water usage in your toilet. You can use the dials for a more powerful flush or water savings. This universal design of this 2-Piece toilet repair kit is built to adjust and work with most toilet brands with flapper flush systems. Turn your super annoying toilet problem into a super easy fix. Best for use in 1.28, 1.6 or 3.5 GPF models. Application: Toilet. Color/Finish Family: Assorted Colors. Included: No Additional Items. Material: Plastic. Pack Size: 1. Plumbing Part Type: Toilet Kit. Toilet Repair Kit Type: Fill Valve and Flapper Repair Kits. Product Depth (in.): 5 in. Product Height (in.): 12.5 in. Product Width (in.): 6.5 in. Toilet Repair Kit Type: Fill Valve and Flapper Repair Kits. Application: Toilet. Plumbing Part Type: Toilet Kit.

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