K&N HD-8899 Washable Motorcycle Engine Air Filter

Motorcycle: The K&N HD-8899 is a washable, reusable engine air filter listed for select 1999–2001 Harley-Davidson models. Its oiled cotton-gauze construction is intended to support airflow and trap contaminants, while exact model-year fit should be confirmed before purchase.

At a glance

Pre-oiled cotton-gauze filter is described as washable and reusable.
K&N claims the filter is designed for high airflow and to trap dirt and contaminants.
Listing identifies fitment for select 1999–2001 Harley-Davidson motorcycles.

Price

$75.99Save 20%

Reference price: ~~$94.99~~

Price checked: Nov 14, 2026

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Often bought together

NGK Iridium IX DCPR7EIX Spark Plugs Compatible with 1999-2016 Harley Davidson Twin Cam (Pair)

$20.78

Pros and cons

Pros

Reusable construction may reduce the need to replace the filter after each service interval.
The listing provides a specific set of compatible model names and years to help assess fitment.

Technical specifications

12 specifications

Identity
Brand	K&N
Model	HD-8899
Product grade	Performance Part
Fit type	Vehicle Specific Fit
OEM part number	ZZ HD8899

Dimensions and installation
Form factor	Unique
Dimensions listed	8.5"L x 8.5"W x 1.56"H
Weight listed	16 ounces

Materials and maintenance
Filter material	premium oiled cotton gauze
Cleaning and reuse	Washable and reusable

Fitment listed
Compatible vehicles	1999-2001 HARLEY DAVIDSON FLHRCI Road King Classic F/I 2000-2001 HARLEY DAVIDSON FLHRI Road King F/I 1999-2001 HARLEY DAVIDSON FLHTCI Electra Glide Classic F/I 1999-2001 HARLEY DAVIDSON FLHTCUI Electra Glide Ultra Classic F/I 2001 HARLEY DAVIDSON FLSTCI Heritage Softail Classic F/I 1999-2001 HARLEY DAVIDSON FLTRI Road Glide F/I

Warranty
Warranty description	LIMITED WARRANTY

What to know before buying

Confirm the exact motorcycle model and year against the fitment list before ordering. The claimed airflow, horsepower, acceleration and engine-protection benefits are manufacturer statements, not independently established performance results.

What’s in the box

Included

HARLEY DAVIDSON TWIN CAM F/I 1999-2001

Who is it for?

A good fit for

Owners of the specific listed Harley-Davidson models seeking a washable replacement engine air filter.
Buyers who prefer a reusable filter and are prepared to clean and maintain it.

Less suited to

Owners of motorcycles outside the listed applications unless compatibility is confirmed.
Buyers seeking a disposable filter or documented independent performance measurements.

K&N HD-8899 Washable Motorcycle Engine Air Filter · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 49 ratings

5 stars80%80%
4 stars10%10%
3 stars6%6%
2 stars0%0%
1 star4%4%

Aggregate ratings lean positive, with most ratings in the top category, but a smaller share are lower, including some one-star ratings. Ratings alone do not explain those experiences or establish fitment, filtration, durability or performance. Buyers should weigh the general rating signal against the need to confirm exact motorcycle compatibility.

Frequently asked questions

Which motorcycles does the listing identify as compatible?

It lists select 1999–2001 Harley-Davidson Road King, Electra Glide, Heritage Softail Classic and Road Glide variants. Check the exact model and year because fitment is application-specific.

Is the HD-8899 washable and reusable?

Yes. The listing describes it as a pre-oiled, washable and reusable cotton-gauze filter. Follow appropriate filter-care instructions for cleaning and re-oiling.

Does the filter guarantee more horsepower or acceleration?

No such outcome is established here. K&N claims high airflow may help improve horsepower, acceleration and engine response, but those claims are not independent measurements.