Fluidmaster Inc K-400H-038-T4 Toilet Tank Repair Kit

Product Description

The FLUIDMASTER INC K-400H-038-T4 is a universal 3 inch high-performance toilet tank repair kit designed to replace all major internal tank components in a single service call. The kit includes a PerforMAX fill valve with adjustable bowl and tank water level settings, a 3 inch adjustable flush valve with quick-turn operation, a 3 inch adjustable flapper with a durable silicone seal and water-saving adjustable dial, and a universal tank-to-bowl gasket. Plumbers and experienced DIYers install this kit to restore full flush performance and eliminate common leak points in one visit.

This kit is suited for residential toilet tank service on 3 inch flush valve toilets. The included components cover the fill, flush, and seal functions in a single package, making it a practical choice for routine toilet rebuilds, callback repairs, or rental property maintenance. The adjustable settings on both the fill valve and flapper allow the installer to dial in water usage to meet local code or conservation requirements without swapping additional parts.

Key Features

• Complete tank rebuild kit: fill valve, flush valve, flapper, and tank-to-bowl gasket included
• PerforMAX fill valve with independently adjustable bowl and tank water level settings
• 3 inch adjustable flush valve with quick-turn installation design
• Silicone seal flapper with adjustable water-saving dial for precise flush volume control
• Universal tank-to-bowl gasket fits most 3 inch flush valve toilets with a two-piece design
• Sold in a package quantity of 4 units per order

Compatibility

Designed as a universal OEM-style replacement for residential toilets equipped with a 3 inch flush valve. The tank-to-bowl gasket is designed to fit most 3 inch flush valve toilet tanks.

Installation Notes

Installation is performed by a licensed plumber or qualified service technician. Shut off the water supply at the stop valve below the tank and flush to empty the tank before beginning any component replacement. Follow all applicable local plumbing codes, including IPC requirements for water conservation settings where mandated. Do not overtighten plastic nuts on the fill valve or tank-to-bowl hardware, as cracking the tank is a common installation error.

Technical Specifications

• Flush Valve Size: 3 inches
• Flapper Seal Material: Silicone
• Weight: 11.11 pounds
• Unit of Measure: EA
• Package Quantity: 4

Standard Information

• Brand: FLUIDMASTER INC
• Manufacturer Part Number: K-400H-038-T4