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K&N RU-1785 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   5.0 out of 5 stars   3 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.

[More Information on Universal Air Filters]

Product Specifications

Air Filter ShapeRound
Filter MaterialCotton Gauze
Flange Inside Diameter3.5 in (89 mm)
Flange Length0.625 in (16 mm)
Flange TypeCentered
Height8.5 in (216 mm)
Package Contents1 Air Filter
Package Quantity1
Outside Diameter5 in (127 mm)
Top MaterialNone
Top StyleRubber
Product StyleRound Straight Universal Air Filter
Weight1.5 lb (0.7 kg)
Filter Re-Oiling Amount1.51 oz (45 ml)
Product Box Height11 in (279 mm)
Product Box Length6.38 in (162 mm)
Product Box Width6.38 in (162 mm)

K&N RU-1785 Universal Clamp-On Air Filter Product Reviews

Wednesday, September 13, 2017 - Part RU-1785
Excellent product, very well made.

Marcin Kozlowski
Warszawa, Poland
Tuesday, June 30, 2015 - Part RU-1785
Filter chart was easy to understand. Filter showed up ahead of scheduled delivery. Everything was easy and fast.

Columbus, Ohio
Tuesday, October 29, 2013 - Part RU-1785
I used a pair of these filters (RU-1785) for my new 451 cubic inch LS engine that is now in my 2002 Z06 Corvette.  During engine dynamometer testing we could not find any power loss when these filter were installed versus a bare 102 mm throttle body.

Great work.

Jim Riley
Northville, Michigan