How often should I clean and re-oil 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. Use a K&N filter cleaning kit to maintain the filter's performance and warranty.

Does this filter come pre-oiled?

Yes, the K&N E-0668 air filter comes pre-oiled and ready to install. You do not need to oil it before the initial installation. Just drop it in the factory airbox.

What is the warranty on this K&N air filter?

This K&N air filter is backed by K&N's 10-Year/Million Mile Limited Warranty. This covers defects in materials and workmanship. Damage from improper cleaning or installation is not covered.

K&N E-0668 Air Filter — 2008-2013 Audi R8 4.2L

Name: K&N Replacement Air Filter for 08-13 Audi R8 4.2L V8
Brand: K&N
Price: 346.99 USD
Availability: InStock

K&N Replacement Air Filter for 08-13 Audi R8 4.2L V8

$346.99

Only 9 left in stock

Washable, reusable air filter improves airflow and is guaranteed for 10 years/million miles.

Key Features

Washable — clean and re-oil for extended use
Reusable — lasts longer than disposable filters
High-flow design — improves airflow to the engine
Oiled cotton media — captures contaminants
Direct drop-in replacement — installs in the factory air box
10-Year/Million Mile Limited Warranty — K&N's warranty against defects

⚠️ 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

Secure CheckoutFast Shipping631-982-0042

Fits these vehicles

Audi R8 2008-2012, 2014-2015
Porsche Boxster 2013-2014
Porsche Cayman 2014

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!