K&N High-Flow Universal Clamp-On Air Filter RC-4780 — 4 In Flange, 9.5 In Height

K&N RC-4780 High-Flow Universal Clamp-On Air Filter combines K&N performance engineering with durable, reusable construction for improved engine airflow and long service life. Designed as a universal clamp-on filter, the RC-4780 features a 4-inch flange, a tapered round shape, and a 9.5-inch filter height to suit a variety of applications. K&N filters are washable and reusable, constructed with premium multi-layer cotton gauze media treated to trap contaminants while optimizing airflow. This replacement-grade filter includes durable molded rubber flanges to absorb vibration and allow secure attachment. The unit is easy to install, pre-oiled, and engineered for long-lasting performance with periodic cleaning rather than frequent replacement. Ideal for customers seeking a lifetime-filter solution that can increase horsepower and acceleration while reducing disposable filter waste.

• NO-HASSLE WARRANTY: 1-Year Limited Warranty
• MADE IN USA: K&N Air Filters are proudly made in the USA for trusted quality & reliability
• REDUCES WASTE: Over 200 million disposable air filters and their packaging waste wind up in landfills each year- reusable filters help reduce waste in our landfills
• UNIVERSAL FITMENT: Designed for use on a variety of applications
• EASY INSTALLATION: K&N Air Filters are pre-oiled and ready to drop into your factory air box- they are one of the easiest and most cost-effective vehicle upgrades for quick performance gains
• CLEAN ONCE EVERY 5 YEARS: Engine air filter only needs cleaning every 75,000 miles under normal highway driving conditions (5 years based on the average miles driven per year of 15,000 miles)
• RUGGED CONSTRUCTION: K&N Universal Air Filters are manufactured with durable, premium materials and state-of-the-art construction methods to last a lifetime
• 6 LAYERS OF PROTECTION: Multiple layers of premium cotton gauze treated with a specially-designed tacking agent work together to create an intricate mesh of engine filter media that is designed to block and trap harmful contaminants
• ENGINEERED POWER: State-of-the-art air filter media is designed to increase horsepower and acceleration as well as improve overall engine performance