How often should I clean and re-oil this filter?

Cleaning depends on your driving conditions. K&N recommends inspecting the filter regularly and cleaning it when you see a buildup of dirt and debris. A typical cleaning interval is every 25,000 to 50,000 miles.

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

Yes, you'll need to use K&N filter oil to properly re-oil the filter. This special oil is designed to work with the cotton media and maintain its filtration properties. Using other oils can damage the filter.

What is the warranty on this air filter?

This K&N air filter is backed by K&N's 10-Year/Million Mile Limited Warranty. This warrants against defects in materials and workmanship for the life of your vehicle, assuming proper installation and maintenance.

K&N E-2021 Air Filter for BMW 118I/120I/320I

Name: K&N Replacement Air Filter BMW 118I/120I/320I, 2005
Brand: K&N
SKU: k-n-engineering-k-n-replacement-air-filter-bmw-118i-120i-320i-2005-t14-235925
Price: 59.15 USD
Availability: InStock

K&N Replacement Air Filter BMW 118I/120I/320I, 2005

$59.15

Only 1 left in stock

Washable and reusable air filter. Designed to improve airflow and engine performance.

Key Features

Washable — clean and re-oil for extended use
Reusable — lasts the life of your vehicle
Improved airflow — supports better performance
Direct replacement — fits in the factory air box

For the 2005 BMW 118I, 120I, and 320I.

⚠️ 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!