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 3.0in. neck diameter, 5in. height and 6in. base.Weight: 2 lbs