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

In stock
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.
More Information
  • 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
Package Contents1 Air Filter
Air Filter MaterialCotton Gauze
Package Quantity1
Flange TypeCentered
Flange Inside Diameter4 in (102 mm)
Air Filter ShapeRound Tapered
Top MaterialBlack Powder Coated
Top StyleMetal
Top Outside Diameter5.25 in (133 mm)
Height9.5 in (241 mm)
Flange Length1.688 in (43 mm)
Base Outside Diameter6.625 in (168 mm)
Warranty1 Year Limited
Air Filter ColorRed
Product StyleRound Tapered Universal Air Filter
Weight3.3 lb (1.5 kg)
Filter Re-Oiling Amount6.79 oz (201 ml)
Air Filter Large End Diameter6.625 in (168 mm)
Product Box Height7 in (178 mm)
Product Box Length14 in (356 mm)
Product Box Width7 in (178 mm)
Footnote 1Top Plate Has 1/4-20 x 1" Stud
Footnote 2Top Has 23/32" Center Hole
Vehicle Applications
Cross References
No cross references found for this part
DIY Level

Easy Moderate Advanced

Tools Typically Needed


Installation Time

5-10 Minutes


Installation PDF

Air Filter Test Data

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