K&N Extends Line of Universal Cone Shaped Air Filters with New Release

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K&N designs and manufactures a wide variety of universal air filters for all types of applications. Constructed with strong pliable rubber flanges, our universal air filters absorb vibration and securely attach to your application with a heavy duty clamp.

K&N Universal air filter RC-4381 with chrome top
K&N Universal air filter RC-4381 with chrome top
K&N has released a new chrome top round tapered universal air filter (RC-4381) which offers a high end look. The RC-4381 is a large air filter which results in more potential air flow and longer periods between cleaning.

The RC-4381 has a base outside diameter of 7.5 inches (191mm), top outside diameter of 5 inches (127mm) and a flange with an inside diameter of 6 inches (152mm) that can be stretched up to 1/16 (1.5mm) to fit any in-between sizes.

K&N’s air filters are designed to allow high air flow while providing excellent filtration. Like other K&N air filters, the RC-4381 is washable and reusable. This cone shaped universal air filter might make the perfect filter for an off-road or racing vehicle or other applications needing a 6 inch flange.  There are hundreds of K&N universal air filter shapes and sizes available for just about any need.

Find K&N Universal Air Filters by using the Universal Air Filter Search by Dimension on Use the K&N application search to find all K&N products for your vehicle then use the K&N dealer search to find a K&N dealer near you.

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K&N Engineering, Inc., with headquarters in Riverside, California, has been the world's leader in performance filter technology since 1969, serving the needs of the automotive, motorcycle, marine, industrial and military markets. K&N is heavily involved in nearly every form of motorsports from off-road and powersports to drag racing, stock cars and road racing. For more information about K&N Filters, please contact K&N Engineering, Inc., P.O. Box 1329, Riverside, CA 92502-1329, (800) 213-4182 for a dealer near you, (800) 858-3333 for technical service/questions, (951) 826-4001 Fax, e-mail, or visit