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K&N RK-380B Universal Air Filter

Custom Assemblies > Universal Air Filter
  • High air flow with excellent filtration
  • Washable and reusable air filter
  • Designed to add power
  • Excellent engine protection
The K&N custom air cleaner below was designed to fit Harley-Davidson® motorcycles. This K&N air cleaner is not street legal nor recommended by Harley-Davidson Motor Co., Inc. K&N custom air cleaners can increase horsepower with proper carburetor calibration. For stock K&N replacement filters that fit Harley-Davidson motorcycles, see our application search.

[More Information on High-Flow Air Intake Systems for Harley-Davidson Motorcycles]

Product Specifications

Air Filter ColorRed
Air Filter Height2 in (51 mm)
Air Filter Inside Diameter2.625 in (67 mm)
Air Filter Large End Diameter5.5 in (140 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeNot Flanged
Air Filter ShapeRound Reverse Tapered
Base Outside Diameter4.5 in (114 mm)
California RestrictedNot legal for sale or use in California
Clamp MaterialStainless Steel
Clamp StyleMini
Clamps Included1
Filter MaterialCotton Gauze
Filter Re-Oiling Amount0.32 oz (9 ml)
Flange Inside Diameter2.625 in (67 mm)
Flange Length0.625 in (16 mm)
Height2 in (51 mm)
Inlet Diameter2.625 in (67 mm)
Inner WireNo
Mounting Hardware IncludedYes
Neck Flange2.625 in (67 mm)
Overall Height2.25 in (57 mm)
Product Box Height3.5 in (89 mm)
Product Box Length6.31 in (160 mm)
Product Box Width6.56 in (167 mm)
Product StyleCustom Assemblies
Replacement FilterRK-380E
Top Material/FinishChrome
Top Outside Diameter5.5 in (140 mm)
Top StyleMetal
Weight1.2 lb (0.6 kg)

K&N RK-380B Universal Air Filter Product Reviews