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 oil this filter?

Yes, this is an oiled cotton gauze filter and requires oiling after cleaning. Use K&N filter oil to properly saturate the filter media and maintain its filtration properties. A properly oiled filter ensures optimal performance and protects your engine.

What kind of warranty does this air filter have?

This K&N air filter is backed by K&N's No-Hassle Lifetime Limited Warranty. This means K&N stands behind the quality and longevity of their product. Refer to the manufacturer's warranty documentation for specific terms and conditions.

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K&N Engineering

K&N Audi A4 1.8L Drop In Air Filter

Name: K&N Audi A4 1.8L Drop In Air Filter
Brand: K&N Engineering
Price: 68.99 USD
Availability: InStock

$68.99

Improved airflow and filtration in a drop-in replacement. Washable and reusable.

Key Features

Washable — saves money on replacement filters
Reusable — environmentally friendly
Drop-in replacement — installs easily
Oiled cotton gauze — improved 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

Will this fit your vehicle?

Compatible with 41 vehicles

Need Help?

631-982-0042

Fast Shipping

Nationwide delivery

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Since 1957

Family-owned

Product Details

K&N's replacement High-Flow Air Filters are designed to increase horsepower while providing exceptional engine protection, and are covered by K&N's No-Hassle Lifetime Limited Warranty.
AUDI A4 L4-2.0L F/I; 2009-2016

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!