Green Filter high performance universal air filters are manufactured from recycled materials and will maintain maximum airflow for increased horsepower and fuel economy. Their washable and reusable deep double-layered cotton pleats are encased in steel wire mesh and set in hand-molded flexible rubber bases for an airtight seal that also absorbs vibration.

Part 2301 Product Specifications
Filter Material: Woven cotton / washable Yes
Base Outside Diameter: 5.5 in
Flange Inside Diameter: 2.75 in (69 mm)
Flange Length: 0.875 in (22 mm)
Flange Type: Centered
Height: 5 in
Top Outside Diameter: 4.75 in
Top Style: X-Stream
Inner Wire: No
Weight: 1.1 lb (0.5 kg)

Cross reference to K&N RX-4090