How often should I clean and re-oil this 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.

What are the dimensions of this filter?

The K&N RU-4730 has a 3-inch flange, 6-inch base, 5-inch top, and a 6.5-inch height. Check these measurements against your existing filter or air intake to ensure proper fitment.

Does this filter come pre-oiled?

Yes, this filter comes pre-oiled from the factory. You can install it right out of the box. Be sure to use K&N filter oil when you clean and re-oil the filter to maintain its filtration properties.

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Trusted Since 1957

Est. 1957

K&N Filter 3 inch Flange 6 inch Base 5 Top 6 1/2 inch Height

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Specifications

Brand: K&N
Part #: RU-4730
UPC: 024844101938

K&N Filter 3 inch Flange 6 inch Base 5 Top 6 1/2 inch Height

Name: K&N Filter 3 inch Flange 6 inch Base 5 Top 6 1/2 inch Height
Brand: K&N
Price: 78.99 USD
Availability: InStock

$78.99

Only 6 left in stock

Universal fit air filter from K&N. Washable and reusable, so it's the last filter you'll need.

Key Features

Universal fit — works in many applications
Washable filter — clean and re-oil for continued use
Pliable rubber flange — allows secure attachment

⚠️ 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's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16 of an inch (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable.