How often should I clean and re-oil my K&N air filter?

Depending on your driving conditions, K&N recommends cleaning and re-oiling your filter every 50,000 miles. If you drive in dusty or off-road conditions, you may need to clean it more often. A K&N filter cleaning kit will help you maintain your filter for optimal performance.

Does this filter come pre-oiled?

Yes, this K&N air filter comes pre-oiled from the factory, ready for installation. You can install it directly into your factory air box without any additional steps. Just make sure your airbox is clean before installing the new filter.

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. Be sure to register your filter on the K&N website to activate the warranty.

K&N 33-2329 Air Filter for Toyota Prius 2004-2009

Name: K&N Replacement Air Filter TOYOTA PRIUS 1.5L-L4; 2004-2009
Brand: K&N
SKU: k-n-engineering-k-n-replacement-air-filter-toyota-prius-1-5l-l4-2004-2009-t14-235607
Price: 59.15 USD
Availability: BackOrder

K&N Replacement Air Filter TOYOTA PRIUS 1.5L-L4; 2004-2009

$59.15

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Washable and reusable air filter. Designed to boost airflow and horsepower.

Key Features

Washable and reusable — save money on replacement filters
Oiled cotton media — traps dirt and improves airflow
Direct drop-in replacement — installs in your factory air box
Designed to last the life of your vehicle — 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

Toyota Prius 2004-2009

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!