The Radium single catch can kit for 2000–2005 Honda S2000 (left-hand-drive) interfaces with the large crankcase vent hose from the valve cover and includes Radium's Fluid Lock catch can as listed. The kit description notes it interfaces with the crankcase vent hose only and is tailored to LHD S2000s; confirm left-hand-drive fitment and intended hose routing before purchase.
Radium Engineering 00-05 Honda S2000 LHD Only Catch Can Kit Crankcase Fluid Lock