Radium Fuel Filter KitThis kit is designed for the 2016+ Ford Focus RS and is not compatible with the Focus ST. It is designed to replace the OEM fuel filter which is plumbed between the electric and mechanical fuel pump. The Radium kit installs in minutes. No cutting or drilling is required. A couple of wrenches is all that is needed. Because the Radium filter is less restrictive than the OEM Ford filter, there is less stress put on the fuel pump (3 5. 5psi less). Lower