K&N Universal Air Filter - Oval Straight - 3.688in Flange ID x 10.25in Base O/S Length x 7.875in H$117.59
K&N Universal Air Filter - Round Tapered - 3in Top OD x 3.75in Base OD x 6in H x 2.438in Flange ID$55.19
K&N Replacement Air Filter 12-13 Porsche 911 3.4L / 12 911 3.8L / 13 911 3.6L / 13 911 Carrera 3.8L$126.39
K&N Universal Rubber Filter-Round Tapered 4.5in Flange ID x 8in Base OD x 6.625in Top OD x 8in H$75.99