K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an...

Constructed with 100-percent polyurethane on top and bottom, this high flow, oiled OE replacement performance filter will outflow stock paper filter for improved horsepower and torque. Five layers of...

Constructed with 100-percent polyurethane on top and bottom, this high flow oil-free OE replacement performance filter will outflow stock paper filter for improved horsepower and torque. Two layers...

K&N 25+ BMW X5 M V8-4.4L High-Flow Replacement Air Filter

Pro 5R Media: This filter features Pro 5R oiled 5-layer progressively finer mesh cotton gauze media for maximum performance. The progressive layering of media allows the filter to flow at high levels...