The Genuine Briggs BA4101 Flapper comes complete with the chain and hook. This flapper is a genuine Briggs replacement part. Therefore it will replace the flapper on many tanks. Also the chain and hook that come with this flapper are metal. Therefore they will last longer. However the flapper itself is rubber. This is so it can create a seal and prevent leaks. 

This flapper fits many Briggs tanks. Including the 4130 and 4132. Therefore this is the genuine replacement flapper for those tanks. Also the model 4134 and 4135 tanks use this flapper. The chain and hook to this flapper connect to the lever. Therefore once the lever is pushed down it will lift the flapper causing a flush. Also this flapper is genuine. 

In conclusion, The Genuine Briggs BA4101 Flapper comes complete. It has the chain and hook to connect to the lever. Therefore it can work properly. Also the flapper is rubber which will make a seal. And also not allow leaks through the flush valve into the tank, This flapper is a two inch flapper that fits many Briggs tanks. 

• Genuine Briggs replacement part
• Comes complete with the chain and hook
• Made of rubber
• Fits many Briggs tanks
• Two inch flapper