Magnum FLOW OE Replacement Air Filter w/ Pro DRY S Media features three layers of oil-free synthetic media and requires no oil during maintenance to provide maximum convenience. Its progressive layering provides great filtration efficiency and dust holding capacity, and is targeted toward street applications. aFe POWER performance air filters use a rounded, evenly spaced pleat design which allows for more usable filter surface area, providing increased flow and greater dust holding capacity. This pliable sealing surface conforms to even the most uneven filter housing, making for a perfect filter fit and sealing surface every time. This design eliminates the use of gaskets or sealants and always goes back to its original form. All aFe POWER flat panel air filters are constructed with a full 360-degree polyurethane frame. The Pro DRY S media is easily cleaned with aFe POWER CLEANER and water.