4" aFe MagnumFLOW Air Filter 21-91057

Constructed with 100% polyurethane on all sides, this high flow OE replacement performance filter will outflow the stock paper filter for improved horsepower and torque. Multiple layers of progressively finer mesh gauze media provides maximum convenience and easy maintenance.

Washable and reusable for multiple cleaning cycles, the tall open evenly spaced pleats provide excellent dust holding capacity for longer service cycle between cleanings. Integrated urethane bump seal insures a tight, leak free seal over the life of the filter.

*Pro DRY S*
* Primary Concern: Convenience - Pro Dry S oil-free, dry synthetic filtration media is the world's easiest-to-service performance air filter media
* Filtration Efficiency: Better - 99.2% - Pro Dry S oil-free, dry synthetic media combines excellent filtration efficiency with easy-to-clean convenience
* Typical Vehicle: Gas / Diesel - With excellent filtration efficiency and high airflow values, Pro DRY S is the perfect choice for any vehicle type
* Driving Conditions: Street/Dusty - Pro Dry S will provide extended filter life in normal, everyday driving conditions; in dry, dusty conditions Pro Dry S is an excellent choice for ease of maintenance