afe Filter GUARD Polyester Pre-Filter For use with 20-91202DM 20-91202RM TF-9029D-MA & TF-9029R-MAaFe Filter GUARD Pre Filters protect your performance air filter and extends your filter cleaning intervals by removing large particles like twigs and bugs from the air stream prior to the air filter. This pre filter is made of a dry weave fabric that does not attract dirt and cleans with soap and water. Made out of dry weave polyester fabric, the pre filter repels water and dirt with minimal effect on air flow. Easily cleaned with soap and water. Pre