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K&N HD-0818 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.9 out of 5 stars   15 Customer Reviews
  • Designed to provide increased horsepower and torque
  • Pleated media provides a large filtration area offering long service intervals
  • Multiple layers of woven cotton gauze media offers excellent filtration
  • Application specific base seal and sealing bead
  • Made in the USA for over 40 years
  • Washable & reusable, pre-oiled and ready to ride!
  • Million-Mile Limited Warranty
K&N's high-flow air filters are available as a replacement for your stock motorcycle air filter element. They are custom engineered to fit your specific application and are designed to provide low restriction and increased performance, while providing excellent engine protection for your motorcycle.

[More Information on K&N Replacement Air Filters]

Product Specifications

Air Filter ShapeRound Tapered
Base Outside Diameter6 in (152 mm)
Filter MaterialCotton Gauze
Filter Re-Oiling Amount0.28 oz (8 ml)
Height2.313 in (59 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height3.5 in (89 mm)
Product Box Length6.31 in (160 mm)
Product Box Width6.56 in (167 mm)
Product StyleUnique Air Filters
Top Material/FinishZinc
Top Outside Diameter5.5 in (140 mm)
Top StyleMetal
Weight1.8 lb (0.8 kg)

K&N HD-0818 Air Filter Product Reviews

Tuesday, December 20, 2016 - Part HD-0818
Great filter for our HD Streetglide.

Bradley Engleking
Silvis, Illinois
Wednesday, December 7, 2016 - Part HD-0818
Fit perfect, exactly what I ordered and arrived on time.

Brad Hutcherson
Avon Lake, Ohio
Friday, September 23, 2016 - Part HD-0818
Great product, been using for years.

Ronald Huff
Westminster, California
Tuesday, September 13, 2016 - Part HD-0818
Always swear by K&N Filters.

Keith Theusch
Minot, North Dakota
Wednesday, September 7, 2016 - Part HD-0818
So far so good. Filter is performing as expected. Way better than the stock filter.

Chris Starzyk
Allen, Texas
Thursday, July 21, 2016 - Part HD-0818
I have used K&N products on several motorcycles and purchased once again to replace the original HD filter after 20,000 miles.

Bill Gulasey
Mason, Ohio
Thursday, May 19, 2016 - Part HD-0818
The shipping was fast, the product was in excellent condition and fit was perfect.

Keithtan Durham
Dallas, Texas