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

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

Do I need to oil the filter after cleaning?

Yes, K&N air filters require oiling after cleaning to maintain their filtration efficiency. Use K&N filter oil and apply it evenly to the filter media following the instructions in the cleaning kit.

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 warrants against defects in materials and workmanship for the life of the filter, when used under normal conditions and properly cleaned.

K&N 33-2916 Air Filter for Citroen C4 L4-1.4L 2004-2012

Name: K&N 04-12 Citroen C4 L4-1.4L F/I Drop In Air Filter
Brand: K&N
SKU: k-n-engineering-k-n-04-12-citroen-c4-l4-1-4l-f-i-drop-in-air-filter-t14-184817
Price: 72.01 USD
Availability: BackOrder

K&N 04-12 Citroen C4 L4-1.4L F/I Drop In Air Filter

$72.01

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. Drop-in replacement for your factory air box.

Key Features

Washable — can be used for the life of the vehicle
Reusable — simply clean and re-oil
Improved airflow — more air to the engine

⚠️ 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!