How often should I clean my K&N air filter?

K&N recommends cleaning and re-oiling your filter every 50,000 miles under normal driving conditions. Depending on your environment, you may need to clean it more often. Inspect the filter regularly for excessive dirt buildup.

Do I need to oil this filter?

Yes, this K&N air filter uses a specially formulated oil to help trap dirt and contaminants. A K&N filter cleaning kit is available separately, containing both the cleaner and oil needed to service your filter.

Will this filter void my vehicle's warranty?

Using a K&N replacement air filter will not void your new car warranty. K&N backs this up with a written warranty policy.

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K&N Engineering

K&N Nissan Armada 3.5L-V6 F/I 2021

Name: K&N Nissan Armada 3.5L-V6 F/I 2021
Brand: K&N Engineering
Price: 73.99 USD
Availability: InStock

$73.99

Improved airflow and filtration for your 2021 Nissan Armada 3.5L. This K&N drop-in replacement filter is washable and reusable.

Key Features

Washable — can be cleaned and reused.
Oiled cotton media — traps contaminants and improves airflow.
Drop-in replacement — fits directly into the factory air box.
Designed for increased horsepower — better performance.
Lifetime Limited Warranty — K&N's warranty covers the filter for the life of your vehicle.

⚠️ 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

Fits these vehicles

INFINITI QX80 2025
Nissan Armada 2025

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Product Details

K&N's replacement High-Flow Air Filters are designed to increase horsepower while providing exceptional engine protection, and are covered by K&N's No-Hassle Lifetime Limited Warranty.

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!