These BULLY DOG drop in replacement air filters are multi-layered cotton gauze for use in stock 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 while promoting the best fuel economy. These filters trap contaminants by utilizing multi-layered cotton gauze covered with a tacky oil that the contaminants adhere to. Replacement panel filters are easy to install and are available for your stock induction system
