The aFe Round Racing Filters is designed for your carbureted racing engine in different diameters and heights. Diameters range from 9" to 16" with height ranging from 2" to 10". Some of these filters have expanded metal mesh for greater structural integrity.

Like all aFe filters, these filters are made with the deepest pleats possible using 100% engineering grade polyurethane. The top and bottom urethane rings have a bump seal that insures tight, dust free seating to whatever dish you might use.

To go with these filters, a standard 7/8" drop chrome top and pan can be purchased together as an assembly or separately.

To address the need for extra protection from dust and dirt with washable/reusable oil-impregnated cotton gauze filters, aFe developed a new filtration technology so revolutionary that it received a patent. This new filtration technology is aptly called Pro-GUARD 7. Pro-Guard 7 Air Filter has 5 layers of progressively finer mesh medical grade cotton gauze with micro fibers that attract smaller and smaller particles as air passes through is combined with 2 layers of random-porosity non-woven synthetic polyester fabric.

This 7-layer combination of cotton gauze and non-woven polyester is sandwiched between 2 layers of epoxy coated aluminum wire mesh. Because of compression ignition of diesel engines, tolerance are much tighter than in a gasoline spark ignition engine. These tight tolerances require clean air and lots of it. Diesel engine require 7 times more air than a gasoline engine of equivalent size. The patented Pro-GUARD 7 filter media delivers more cool clean air needed for extended engine life, better fuel conomy and additional power.