Roger Clark Motorsport Billet Aluminium Oil Separator Cover KitOur Billet Oil Seperator Cover is the perfect addition to any engine build to guard against future oil leaks. Throughout the years Subaru produced oil separator covers using a variety of materials such as: cast aluminium, plastic and pressed steel. Many of the later designs were manufactured purely as a cost saving exercise and as such later resulted in costly oil leaks which could be spotted making their way out from between the engine block and