Bully Dog RFI Filters are multi-layered cotton gauze conical air filters for use in RFI Induction Systems. They have the lowest air induction resistance and a lifetime of reusability.

Our high performance air filters represent the most cost-effective horsepower gains. These filters trap contaminants by utilizing multi-layered cotton gauze covered with a tacky oil that the contaminants adhere to. Replacement panel filters are also available for your stock induction.