K&N RU-5121

Universal Air Filters > Universal Rubber Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.0 out of 5 stars   1 Customer Review
List Price: $71.86
Your Price: USD $45.99

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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.

[More Information on Universal Air Filters]
  • 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

Product Specifications

Air Filter Large End Diameter5.375 in (137 mm)
Air Filter ShapeRound Tapered
Base Outside Diameter5.375 in (137 mm)
Filter MaterialCotton Gauze
Filter Re-Oiling Amount0.95 oz (28 ml)
Flange Inside Diameter4 in (102 mm)
Flange Length0.625 in (16 mm)
Flange TypeCentered
Footnote 1Base Has 7/8" Vent
Height6 in (152 mm)
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 StyleRound Tapered Universal Air Filter
Top Material/FinishNone
Top Outside Diameter3.5 in (89 mm)
Top StyleRubber
Weight0.9 lb (0.4 kg)

Product Reviews

Review part RU-5121
Wednesday, August 26, 2015 - Part RU-5121
It's would of been easier to order from a home computer then a cell phone. But I worked my way though it,and managed to get it ordered. Overall not to hard.

Ben Nolen
Angleton, Texas