How often should I clean this filter?

The cleaning interval depends on your driving conditions. Inspect the filter regularly, and clean it when you see a buildup of dirt and debris. A K&N filter cleaning kit will help you maintain optimal performance.

What is the flange size on this filter?

The K&N RP-4970 has a 4-inch inside flange diameter and a 5/8-inch flange length. This clamp-on design makes installation simple.

Is this filter legal in California?

No, this air filter is not CARB-approved. That means it cannot be used on pollution-controlled vehicles in California.

K&N Round Tapered Universal Air Filter 4 inch Flange 5 3/8 inch Base 4 inch Top 7 inch Height

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K&N Engineering

K&N Round Tapered Universal Air Filter 4 inch Flange 5 3/8 inch Base 4 inch Top 7 inch Height

Name: K&N Round Tapered Universal Air Filter 4 inch Flange 5 3/8 inch Base 4 inch Top 7 inch Height
Brand: K&N Engineering
Price: 209.99 USD
Availability: InStock

$209.99

Universal air filter with oiled cotton media and carbon fiber top. Strong and lightweight.

Key Features

Oiled cotton filter media — high airflow and filtration
Carbon fiber top — strong and lightweight
Clamp-on design — easy to install
Washable and reusable — saves money over disposable 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

Fits this vehicle

Honda Civic 2001-2005

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Since 1957

Family-owned

Product Details

The RP-4970 Universal Air Filter is constructed from an oiled cotton filter media. It comes with a carbon fiber top for strength and durability. The carbon fiber element adds to the light-weight design and gives this filter a smooth glass like finish. The RP-4970 is a clamp-on filter that has an inside flange diameter of 4 inches and a flange length of 5/8 inches. The base is 5 3/8 inches and the filter height is 7 inches.