How often should I clean my K&N air filter?

The cleaning interval depends on your driving conditions. K&N recommends cleaning the filter when you can no longer see the wire mesh on the filter, or every 50,000 miles on street-driven vehicles. Off-road vehicles may need more frequent cleaning.

What kind of cleaner and oil should I use on my K&N air filter?

K&N sells Recharger kits that contain both the cleaner and the oil you need to service your filter. Using other oils can damage the filter media and affect its performance.

Does this filter come pre-oiled?

Yes, this K&N air filter comes pre-oiled and ready to install. You do not need to oil it before its initial use.

K&N E-3340 Air Filter — 6.25in OD

Name: K&N Custom Air Filter - Round 6.25in OD 5.25in ID 3.25in H
Brand: K&N
SKU: k-n-engineering-k-n-custom-air-filter-round-6-25in-od-5-25in-id-3-25in-h-t14-172325
Price: 72.01 USD
Availability: BackOrder

K&N Custom Air Filter - Round 6.25in OD 5.25in ID 3.25in H

$72.01

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Washable and reusable air filter improves airflow and traps contaminants. Expect a slight horsepower increase.

Key Features

Washable — clean and re-oil for extended use
Reusable — lasts for the life of your vehicle
High-flow design — lets your engine breathe easier
Cotton gauze media — traps contaminants without sacrificing airflow

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's No-Hassle Lifetime Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!