K&N Round Straight Universal Air Filters:

Part # Flange Inside Dia. (F) Outside Dia. (D) Length (L) Flange Length (FL)
RX-4040-12.438 in (62 mm)4 in (102 mm)4.75 in (121 mm)0.75 in (19 mm)
RX-41403.5 in (89 mm)4 in (102 mm)5.75 in (146 mm)0.75 in (19 mm)