The PRO Dry S air filter used by the Takeda performance air intake system uses a 2-layer synthetic media that requires no oils. This filter is 99.2% efficient filtering out all of the most harmful air contaminants while allowing maximum flow. This filter requires no oils and cleans with soap and water for maximum convenience.This filter has a 3in. flange diameter, 8in. height, 2 3/4in. top diameter and 6in. base diameter.Weight: 2 lbs