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K&N RF-1021 Universal Air Filter

Universal Air Filters > Universal Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 out of 5 stars   2 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" (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable.

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Product Specifications

Air Filter ShapeOval Straight
Base Outside Diameter5.87 in (149 mm)
Base Outside Length5.875 in (149 mm)
Base Outside Width5.875 in (149 mm)
Filter MaterialCotton Gauze
Filter Re-Oiling Amount1.42 oz (42 ml)
Flange Inside Diameter4.5 in (114 mm)
Flange Length0.625 in (16 mm)
Flange TypeCentered
Height8 in (203 mm)
Inner WireNo
Package Contents1 Air Filter
Package Quantity1
Product Box Height11 in (279 mm)
Product Box Length6.38 in (162 mm)
Product Box Width6.38 in (162 mm)
Product StyleOval Tapered Universal Air Filter
Top Material/FinishStainless Steel
Top Outside Length4.5 in (114 mm)
Top Outside Width3.25 in (83 mm)
Top StyleMetal
Weight1.6 lb (0.7 kg)

K&N RF-1021 Universal Air Filter Product Reviews

Monday, June 27, 2016 - Part RF-1021
I bought this filter to replace one I damaged whilst working on my car. It fit's nicely even though the induction kit was not made for my car. I will always fit a K&N filter to my cars as they are easy to clean, give an improvement in efficiency and a improvement in the driveability of the car.

Steven Williams
Lincolnshire, United Kingdom
Friday, July 11, 2014 - Part RF-1021
Fits perfect. Love it!!

Victor Munoz