Constructed with 100% polyurethane on this unique oval cylinder design, this high-flow, non-oiled OE replacement performance filter has outflowed the stock filter by up to 42% for improved horsepower and torque. The Pro DRY S air filter uses three layers of progressively finer mesh cotton gauze media to provide maximum airflow for best performance results. Open evenly spaced pleats provide excellent dust holding capacity for a longer service cycle between cleanings. An integrated urethane bump seal insures a tight, no leak seal over the life of the filter.