4030pk Adjustable Flush Valve & Gasket Kit, 2-in.

The Korky 4030PK is an adjustable 2-inch flush valve and tank-to-bowl gasket kit designed to repair and replace worn components in 2-piece toilet tanks. This universal kit fixes leaks between the tank and bowl and worn seating surfaces. Whether your toilet is losing water, running constantly, or no longer sealing properly, this complete repair solution provides everything needed for a successful fix without additional parts or tools.

Installing the 4030PK is straightforward and requires no special equipment or hack sawing. The flush valve height adjusts from 7 inches to 11½ inches, allowing you to customize the fit for your specific toilet tank. The oversized tube and funnel design reduce the risk of flooding during installation and operation, while the included premium flapper and tank-to-bowl gasket create a tight, leak-proof seal that restores proper toilet function.

Features and Benefits

• Universal fit: Compatible with all major 2-piece toilet tank brands, eliminating guesswork during installation.
• Adjustable height: Valve height adjusts from 7 to 11½ inches without tools or saw work required.
• Complete kit: Includes flush valve, tank-to-bowl gasket, premium flapper, hardware, and instructions—no additional parts needed.
• High-performance flapper: Ultra high performance flapper design ensures a tight, leak-proof seal.
• Flood prevention: Oversized tube and funnel design minimizes overflow risk.

Specifications

• Brand: Korky
• Model: 4030PK
• Valve size: 2 inch
• Adjustable height range: 7 to 11½ inches
• Material: Plastic and rubber
• Compatible with: 2-piece toilet tanks
• Flush ratings supported: 1.28, 1.6, 3.5, and 5 gpf
• Included components: 1 flush valve, 1 tank-to-bowl gasket, 1 premium flapper, 1 hardware set, 1 instruction sheet