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 notice a build-up of dirt or debris, or every 50,000 miles under normal highway conditions. Off-road driving will require more frequent cleaning.

What do I need to clean and re-oil my K&N air filter?

You'll need a K&N air filter cleaning kit, which includes both the cleaner and the oil. The cleaner removes dirt and grime, and the oil restores the filter's ability to trap contaminants and improve airflow. Follow the instructions included with the cleaning kit for best results.

Does this filter come pre-oiled?

Yes, this K&N air filter comes pre-oiled and ready to install. You don't need to oil it before the initial installation. Just drop it into your factory airbox.

K&N Air Filter 33-2970 | BMW 523i 3.0L 2009-2010

Name: K&N 09-10 BMW 523i 3.0L-L6 Drop In Air Filter
Brand: K&N
Price: 68.99 USD
Availability: InStock

K&N 09-10 BMW 523i 3.0L-L6 Drop In Air Filter

$68.99

Only 3 left in stock

Washable and reusable air filter improves airflow. Fits directly in the factory airbox.

Key Features

Washable — clean and re-oil for extended use
Reusable — lasts the life of your vehicle
Oiled cotton media — traps dirt and improves airflow
Direct drop-in replacement — installs in the factory airbox

⚠️ 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 this vehicle

BMW 528i 2011

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!