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 even when dirty. The Pro 5R filter media has been tested at 98.6 percent filtration efficiency. Rounded Open Pleats: aFe performance air filters use a rounded, evenly spaced pleat design which produces more useable filter surface area for increased flow and greater dust holding capacity. Pleats are 30% taller that the paper alternative.

100% polyurethane/ABS plastic construction: To allow multiple cleaning cycles, the base is made of 100% 55 Shore "A" pliable polyurethane that does not deteriorate with time or exposure to heat and chemicals. Top is made of durable ABS plastic individually printed in 3D printer to incorporate stock clips needed for perfect factory fit. aFe POWER OE replacement performance filters have a limited life warranty.