Compare Maximum number of 4 items selected K&N Engineering Round Air Filter - RD0720 Part #: RD0720 Line: KAN K&N Engineering Round Air Filter 1 Year Limited Warranty Quantity: 1 Style: Round Height (in): 6 Inch Outside Diameter (in): 3-1/2 Inch Width (in): 3-1/2 Inch Flange Type: Centered Flange Length (in): 5/8 Inch Flange Inside Diameter (in): 2-1/2 Inch Filter Re-Oiling Amount (Oz): 0.52 Ounce Washable: Yes Frame Design: Flexible Filter Media: Cotton Gauze Pre-Oiled: Yes Pre-Screened: No Show More Show Less