How often should I clean and re-oil this filter?

The cleaning intervals depend on your driving conditions. Inspect the filter regularly, and clean it when you see a buildup of dirt and debris. K&N sells filter cleaning and oiling kits to maintain your filter.

Does this filter come pre-oiled?

Yes, this K&N air filter comes pre-oiled from the factory, ready for installation. You do not need to oil it before initial use. Be sure to use K&N-specific oil when you service it.

What is the flange size on this filter?

This filter has a 3-1/4 inch flange. The pliable rubber allows for some stretch, up to 1/16 of an inch (1.5mm), to fit slightly larger or smaller intake pipes securely.

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Trusted Since 1957

Est. 1957

K&N Universal Clamp-On Air Filter 3-1/4in FLG / 5-3/4in B / 3-1/2in T / 5-7/16in H

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Specifications

Brand: K&N
Part #: RU-1637
UPC: 024844373922

K&N Universal Clamp-On Air Filter 3-1/4in FLG / 5-3/4in B / 3-1/2in T / 5-7/16in H

Name: K&N Universal Clamp-On Air Filter 3-1/4in FLG / 5-3/4in B / 3-1/2in T / 5-7/16in H
Brand: K&N
Price: 94.99 USD
Availability: InStock

$94.99

Only 3 left in stock

Universal clamp-on air filter for custom applications. Washable and reusable.

Key Features

Washable and reusable — clean and re-oil for extended filter life
Universal fit — works on many applications
Pliable rubber flanges — allow for 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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Fits this vehicle

Ford Fusion 2013-2016

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.