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 pleat design which produces more useable filter surface area for increased flow and greater dust holding capacity.

100% Polyurethane Construction: 
To allow multiple cleaning cycles, the top and base are made of 100% pliable polyurethane that does not deteriorate with time or exposure to heat and chemicals.

aFe Power OE replacement performance filters have a limited lifetime warranty.