The British Seagull® Villiers carburettor float chamber assembly that is situated on the bottom of the carburettor and holds the carburettor float that regulates the fuel.
This British Seagull part is suitable for engines fitted with the Villiers carburettor only. Some British Seagulls fitted with a Villiers carburettor may feature plastic float chambers which are no longer available, however, this metal float chamber assembly is usually interchangeable.