Part Number - AUC8459. This sale is for ONE gasket. The thin gasket for the float bowl/chamber on any SU HS2, HS4 and HS6 carburettor. Classic Mini SU Carburettor Float Chamber Bowl Gasket. We are Minimine Ltd, from Stoke-on-Trent, we have been trading in Mini parts and accessories since the early 1990's.