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

K&N recommends cleaning and re-oiling your filter every 50,000 miles for normal highway use. If you drive in dusty conditions, you may need to clean it more often. Regular cleaning ensures optimal airflow and performance.

Do I need to buy special oil to re-oil the filter?

Yes, you'll need to use K&N filter oil to properly re-oil your air filter after cleaning. Regular motor oil or other oils will damage the cotton fibers and reduce the filter's effectiveness. K&N filter oil is specially formulated to work with the cotton media.

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 installation. Just drop it into your factory airbox and you're good to go.

K&N Air Filter E-0647 | 2015-2018 Audi A4

Name: K&N 15-18 Audi A4 L4-2.0 F/I Replacement Drop In Air Filter
Brand: K&N
Price: 104.99 USD
Availability: InStock

K&N 15-18 Audi A4 L4-2.0 F/I Replacement Drop In Air Filter

$104.99

Only 5 left in stock

Direct replacement for your factory air filter. Washable and reusable, so you don't have to buy a new filter every time.

Key Features

Washable and reusable — clean and re-oil it instead of buying a new filter
Designed to increase horsepower — get more power from your engine
Direct drop-in replacement — installs in the factory air box
Backed by K&N's 10-Year/Million Mile Limited Warranty

⚠️ 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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Fits this vehicle

Audi A4 2015-2020

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!