K&N Clamp-On Air Filter - 4" Height / 2" Flange / 3.5" Base / 2" Top (RC-1200)

K&N Filters
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K&N Universal Clamp-On Air Filters

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.


  • Designed to boost horsepower and rate of acceleration
  • Can be cleaned and used again
  • High air flow with exceptional filtration
  • Malleable flanges
  • One Year Limited Warranty


  • Universal


  • Air Filter Shape - Round Tapered
  • Filter Material - Cotton Gauze
  • Flange Inside Diameter - 2.063 in (52 mm)
  • Flange Length - 0.625 in (16 mm)
  • Flange Type - Centered
  • Overall Height - 4 in (102 mm)
  • Base Outside Diameter - 3.5 in (89 mm)
  • Top Outside Diameter - 2 in (51 mm)
  • Top Material - Chrome

What's In The Box?

  • 1 - K&N Clamp-On Air Filter


  • Million Mile Limited Warranty

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