K&N Universal Clamp-On Air Filter (4in Flange ID, 5.375in Base OD, 4.5in Top OD, 7in Height)

This K&N Universal Clamp-On Air Filter is engineered for high airflow and exceptional filtration in custom intake applications, racing setups, or as a high-performance replacement for restrictive factory filters. Built with K&N’s signature oiled cotton gauze media, this filter provides low restriction to help your engine breathe more efficiently while maintaining the critical protection required for long-term engine health.

The clamp-on design allows for a secure, airtight seal directly to an intake tube or throttle body. Because the filter media is washable and reusable, it serves as a permanent induction solution that can be cleaned and re-oiled for years of service. The round tapered shape and chrome top provide a professional finish for any engine bay.

• Flange Inside Diameter: 4 in (102 mm)
• Base Outside Diameter: 5.375 in (137 mm)
• Top Outside Diameter: 4.5 in (114 mm)
• Filter Height: 7 in (178 mm)
• Flange Type: Centered
• Filter Material: Oiled Cotton Gauze
• Top Material/Finish: Chrome
• Clamp Included: Yes