K&N Dual Flange Oval Tapered Universal Air Filters

Part # Flange Inside Dia. (F) Flange Center to Center Base Outside Dim. (MA) Base Outside Dim. (SA) Top Outside Dim. (MA) Top Outside Dim. (SA) Length (L) Top Style Flange Length (FL)
RU-28502.125" 2.938" 6" 4" 4.5" 3.75" 4" Rubber 0.625"
RU-47102.375" 3" 6.25" 3.75" 4.438" 3.438" 6.75" Rubber 0.375"
RU-47202.375" 3" 6.25" 3.75" 4.438" 4.438" 5" Rubber 0.375"
RF-10123.125" 3" 8.75" 5" 6.25" 4" 9" Metal 0.625"
RC-51453.125" 3" 8.75" 5" 6.25" 4" 9" Stainless Steel 0.625"