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K&N Round Straight Universal Air Filter RU-1720

Item: P1050792
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Product Details

K&N Universal 3" Round Straight Air Filter with Rubber Cap


  • K&N filters are perfect for racing applications who want to add some aesthetics to their classic carbureted engine.
  • Filter has a K&N embossed rubber top with a rubber base.
  • Constructed with a non-woven synthetic filter media it can be cleaned and reused and is covered under K&N's One Year Limited Warranty
  • The filter openings can be stretched up to 1/16″ to fit in-between sizes


  • 3.5" Outside diameter
  • 6" Height
  • 1" Flange length
  • 2.25" (57 mm) Flange Inside Diameter 
  • Flange Type - Angled
  • RU-1720
Product Style J&P Cycles Item # Catalog Number Store Sku MFR. Product # Availability
Product Style K&N Round Straight Universal Air Filter RU-1720 J&P Cycles Item #857327 Catalog Number921-523 Store Sku MFR. Product #RU-1720 AvailabilityIn Stock: Ships within 24 hours
Fitment Notes & Exceptions
This is a universal fit part; it may or may not fit without modification.
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