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. Use a K&N filter cleaning kit to maintain the filter's performance.

Does this filter require oiling?

Yes, this is an oiled cotton air filter. It arrives pre-oiled and ready to install. You'll need to re-oil it after cleaning to maintain its filtration properties.

Will this filter void my vehicle's warranty?

Using a K&N replacement air filter will not void your new car warranty. K&N air filters are designed to meet or exceed OEM specifications, and the Magnuson-Moss Warranty Act protects your right to use aftermarket parts.

K&N 33-2399 Air Filter for Nissan and Infiniti

Name: K&N 07-09 350z/370z/G35/G37 Drop In Air Filter
Brand: K&N
Price: 68.99 USD
Availability: InStock

K&N 07-09 350z/370z/G35/G37 Drop In Air Filter

$68.99

In Stock

Washable and reusable air filter. Drop it in for improved airflow and engine protection.

Key Features

Washable — save money on replacement filters
Drop-in replacement — installs easily in the factory air box
Oiled cotton gauze media — better airflow than paper filters
10-Year/Million Mile Limited Warranty — K&N stands behind their filters

⚠️ 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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Will this fit your vehicle?

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!