Fluidmaster K-400H-039 Toilet Fill Valve & 2-Inch Flapper Repair Kit

The Fluidmaster K-400H-039 Toilet Fill Valve and Flapper Repair Kit is a dedicated set designed to replace worn or outdated components inside a toilet tank. It provides the essential internal hardware needed to address aging parts for homeowners handling standard tank maintenance.

This package centers around two primary components: a PerforMAX fill valve and a 2-inch flapper. Together, these parts are engineered specifically to restore the performance of toilets that use a standard 2-inch flush valve system.

Because this kit is built for a 2-inch flush valve setup, it will not accommodate fixtures that use larger or alternative flush valve sizes. Additionally, the manufacturer information does not specify what tools, extra hardware, or sealants might be required during assembly.

Verdict: The Fluidmaster K-400H-039 kit is a sensible choice if you need to refresh outdated tank hardware on a toilet with a standard 2-inch flush valve. It supplies the core fill valve and flapper required to bring your existing setup back up to working order.

A great fit if you:

• Own a toilet configured with a 2-inch flush valve
• Need to replace an outdated or worn fill valve
• Want an all-in-one replacement with a matching 2-inch flapper

Consider something else if you:

• Have a toilet that uses a flush valve size other than 2 inches
• Only need a standalone flapper or fill valve without the other part

What components come inside this repair kit?
The kit includes a Fluidmaster PerforMAX fill valve and a 2-inch flapper.

What size flush valve is this kit compatible with?
It is designed specifically for toilets that use a 2-inch flush valve.

What is the purpose of this kit?
It is designed to restore toilet performance by replacing old, worn, or outdated components.