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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   17 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
The K&N HD-0818 Air Filter fits some Harley Davidson FLSS Softail Slim S models. See vehicle applications link for details.
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
Filter MaterialCotton Gauze
Height2.313 in (59 mm)
Package Contents1 Air Filter
Package Quantity1
Product StyleUnique Air Filters
Base Outside Diameter6 in (152 mm)
Top Outside Diameter5.5 in (140 mm)
Top StyleMetal
Top MaterialZinc
Weight1.8 lb (0.8 kg)
Filter Re-Oiling Amount0.28 oz (8 ml)
Product Box Height3.5 in (89 mm)
Product Box Length6.31 in (160 mm)
Product Box Width6.56 in (167 mm)

K&N HD-0818 Air Filter Product Reviews

Thursday, August 24, 2017 - Part HD-0818
K&N is always my go to filter.

Joseph Crouch
Tuesday, April 18, 2017 - Part HD-0818
Excellent product, superb service.

David Stobbs
North West of England
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