Fluidmaster Inc K-400H-021-P8 Complete Toilet Repair Kit

Product Description

The FLUIDMASTER INC K-400H-021-P8 is a complete toilet tank repair kit designed to replace the fill valve, flush valve, flapper, gasket, and tank hardware in a single service call. The kit centers on a PerforMAX 2.0 fill valve paired with an adjustable 2-inch flush valve and adjustable flapper. No cutting of the flush valve overflow tube is required, and the included gasket is designed to fit a wide range of toilet brands. Plumbers and experienced DIYers can complete the install without additional tools or a water bucket, as all necessary hardware and installation tools are included in the package.

This kit is suited for residential toilet tank rebuilds where the fill valve, flush valve, or tank-to-bowl hardware has failed or is leaking. The no-cut overflow tube design simplifies the repair and reduces service time. The adjustable flush valve accommodates varying tank depths, making it applicable across a broad range of standard 2-inch toilet configurations. All hardware needed for a full tank rebuild is contained in the package.

Key Features

• PerforMAX 2.0 fill valve included for reliable water refill performance
• Adjustable 2-inch flush valve with adjustable flapper fits varying tank depths
• No cutting of flush valve overflow tube required
• Gasket designed to fit Kohler, Mansfield, Gerber, and other standard toilets
• Includes 3 stainless steel bolts, washers, nuts, and rubber washers for tank-to-bowl connection
• Fill valve install tool and flush valve install tool included — no separate tool purchase needed
• Water catch bag included to manage residual tank water during service

Compatibility

The included gasket is stated by the manufacturer to fit Kohler, Mansfield, Gerber, and all other standard toilet brands. The adjustable 2-inch flush valve is designed to work with standard residential toilet tanks requiring a 2-inch flush valve seat.

Installation Notes

A licensed plumber or qualified technician should shut off the water supply at the stop valve below the tank and flush to drain residual water before beginning work. Use the included water catch bag to remove remaining water from the tank without a separate bucket. Follow all applicable local plumbing codes, including IPC guidelines, when replacing tank hardware. Verify fill valve height adjustment matches the tank before final connection and turn water on slowly to check for leaks at all fittings.

Technical Specifications

• Flush Valve Size: 2 inches
• Flush Valve Overflow Tube: No cutting required
• Bolts: Stainless steel, quantity 3, with washers, nuts, and rubber washers
• Package Weight: 20.54 pounds
• Unit of Measure: EA
• Package Quantity: 8

Standard Information

• Brand: FLUIDMASTER INC
• Manufacturer Part Number: K-400H-021-P8