K&N 4in ID / 5.25in OD / 2in H Custom Assembly Filter designed to fit Harley-Davidson Motorcycles

K&N 4in ID / 5.25in OD / 2in H Custom Assembly Filter designed to fit Harley-Davidson Motorcycles

Marsoni

M251S

$179.99

Get it in 3 business days with 1 day shipping. Friday, May 29

K&N 4in ID / 5.25in OD / 2in H Custom Assembly Filter designed to fit Harley-Davidson MotorcyclesK&N custom air cleaners are designed for use on older Harley Davidson motorcycles. With proper carburetor calibration, these custom air cleaners can increase horsepower on your bike. Each custom air cleaner comes with a K&N high flow air filter. These air cleaners are perfect for many applications, such as racing or off roading. This custom air cleaner has a 2. 625 in (67 mm) inlet and comes with one gasket. The back plate is pre drilled. Included is

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Bought this for my Honda fit sport. Perfect fit for my fit. We shall see how it works out in the long run. I'm guessing every six months I'll wash it out, give it a light piling with the refresher kit I bought. The car doesn't get driven a lot during the year, so, doing it this way should be more than fine.

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Reviewed in the United States on April 22, 2026

Verified Purchase

P Patel

Phoenix, US

★★★★★ 5

Premium, Reusable Cabin Filter – Worth It Long-Term

Size: 2" x 10" x 11"

I've been using the K&N Lifetime Washable Cabin Air Filter in my vehicle for several months, and here's my experience: Pros: Washable & Reusable: Eliminates the need for frequent replacements, saving money over time. Improved Airflow: Noticed a slight increase in airflow through the vents, enhancing cabin comfort. Odor Control: Effectively reduces musty smells, providing a fresher cabin environment. Cons: Initial Cost: Priced higher than disposable filters, but the long-term savings offset this. Cleaning Required: Needs periodic cleaning to maintain performance, which might be inconvenient for some users.

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Reviewed in the United States on June 25, 2025

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Alan Douglas Charles Cavanaugh II

Pawtucket, US

★★★★★ 5

Must have over other filters.

Size: 2" x 10" x 11"

Amazing KN never fails for cabin filter works great in my 2021 Honda Civic hatchback sport touring.Must have for the 10th Gen Civic better air flow in car and cleaner smell easy to wash and reuse.

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Reviewed in the United States on April 25, 2026

Verified Purchase

Martha Brown

Massapequa, US

★★★★★ 5

Quality

Size: 2" x 10" x 11"

My brother put me onto these filters. Super easy to install. Also bought engine filter. One time expense. A bit pricey but cost covered if you were still buying paper ones in about 3 changes of paper ones. Will definitely pay for themselves. Highly recommend

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Reviewed in the United States on March 18, 2026

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James G. Low

Carnegie, US

★★★★★ 5

It works like a champ!!

Size: 2" x 10" x 11"

best darn filter made..

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Reviewed in the United States on April 10, 2026