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K&N RC-4780 Universal Clamp-On Air Filter

Universal Air Filters > Universal Clamp-On Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.8 out of 5 stars   25 Customer Reviews
  • Designed to increase horsepower and acceleration
  • Hundreds of sizes and shapes for most applications
  • High air flow with excellent filtration
  • Clamp-on washable and reusable air filter
  • Malleable flanges
  • One year limited warranty
K&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16 of an inch (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable.

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Available Information

Product Specifications

Air Filter Large End Diameter6.625 in (168 mm)
Air Filter ShapeRound Tapered
Base Outside Diameter6.625 in (168 mm)
Filter MaterialCotton Gauze
Filter Re-Oiling Amount6.79 oz (201 ml)
Flange Inside Diameter4 in (102 mm)
Flange Length1.688 in (43 mm)
Flange TypeCentered
Footnote 3Top Has 23/32" Center Hole
Height9.5 in (241 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height7.75 in (197 mm)
Product Box Length14.38 in (365 mm)
Product Box Width7.38 in (187 mm)
Product StyleRound Tapered Universal Air Filter
Top MaterialBlack Powder Coated
Top Outside Diameter5.25 in (133 mm)
Top StyleMetal
Weight3.3 lb (1.5 kg)

K&N RC-4780 Universal Clamp-On Air Filter Product Reviews

Monday, April 3, 2017 - Part RC-4780
I purchased this filter so I can replace the existing filter of the same part I can service existing filter at my own time. I am very satisfied with K&N products.

James Anderson
Tacoma, Washington
Tuesday, March 28, 2017 - Part RC-4780
You have a great product and I have been using the K&N filters for years/decades. Awesome! Thanks for the great service. Mark

Mark Behne
Highland, California
Tuesday, February 14, 2017 - Part RC-4780

Shawn Bennett
DeRidder, Louisiana
Monday, November 21, 2016 - Part RC-4780
Shipping was fast and on time. Had my filter for 150,000 miles on my Dodge diesel and the rubber around the neck got hard, made it hard to take off and on. So I got a new one. Love it...

William Smith
Vail, Arizona
Saturday, October 29, 2016 - Part RC-4780
I was surprised at how fast I got my order. It helps with the fuel mileage and HP.

James Stokes
Beggs, Kansas
Wednesday, October 5, 2016 - Part RC-4780
Saved money, gas and time ordering from K&N and not going to my local auto parts store. Thanks

Darleine Darna
Bokeelia, Florida
Wednesday, July 13, 2016 - Part RC-4780
The transaction was perfect. Could not have been better. I am happy with the filter and now I am not forced to clean the dirty one before I can get back in operation. I have a spare. Thank you!

Leonard A Krebs Southeast Pallet Recycling
Louisville, Kentucky