Briggs B4800GKIT Flush Valve. This flush valve comes complete with all parts needed. Therefore it is ready to install. Also the flapper on this valve comes complete. Also the nut and gasket to secure this valve to the tank come with it. Therefore it is ready to install. The flapper that comes with this valve is rubber. Therefore it will prevent leaks from the tank into the bowl. 

This flush valve is for the 4494, and 4496 tanks. This is a genuine Briggs replacement part. Therefore it will replace the valve in the tanks listed. This valve is plastic. Therefore it will not rust inside the tank. Also the flapper comes with the chain and hook to connect to the lever. Therefore when you push the lever it lifts the flapper causing the flush. 

In conclusion, This Briggs B4800GKIT Flush Valve comes complete. It comes with the flapper. Also the flapper has the chain and hook to connect to the lever. The flapper is rubber. Also the nut and gasket to secure it to the tank come with it. The nut is plastic. However the gasket is rubber. Therefore it will prevent leaks in between the tank and bowl. 

• Genuine Briggs replacement part
• Comes with flapper
• Nut and gasket 
• Plastic
• Rubber flapper