aFe POWER Magnum FLOW Blk Pro 5R Air Filter 6.75x5in Flange x 9.25x7.5 Base x 7.75x6 Top x 18 HeightThis filter features five layers of pre oiled cotton gauze media to provide maximum performance. Its progressive layering allows the filter to flow at high levels even when dirty, while its inverted top makes for more filter surface area, resulting in longer service intervals. This media is perfect for street and or track use. Black Pro 5R filters are easily recharged with aFe's POWER CLEANER and black air filter oil. aFe POWER performance air filters