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

The cleaning interval depends on your driving conditions. In dusty conditions, you'll need to clean it more often. 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 make this process easy.

What size is the flange on this filter?

The flange is 6 inches in diameter. The pliable rubber can stretch up to 1/16 of an inch (1.5mm) to fit slightly larger intake sizes. Always measure your intake to ensure a proper fit and seal.

Is this filter legal in California?

This universal air filter is not CARB-approved. That means it cannot be installed on pollution-controlled vehicles in California. Check your local regulations for compliance.

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Trusted Since 1957

Est. 1957

K&N Universal Clamp-On Air Filter 6in FLG / 7-1/2in B / 4-1/2in T / 5in H

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Specifications

Brand: K&N
Part #: RU-5138
UPC: 024844373502

K&N Universal Clamp-On Air Filter 6in FLG / 7-1/2in B / 4-1/2in T / 5in H

Name: K&N Universal Clamp-On Air Filter 6in FLG / 7-1/2in B / 4-1/2in T / 5in H
Brand: K&N
Price: 94.99 USD
Availability: InStock

$94.99

Only 5 left in stock

Universal clamp-on air filter from K&N. Washable and reusable.

Key Features

Washable filter — clean and re-oil for long life
Pliable rubber flange — creates a tight seal on various intake shapes
Universal fit — works on many kinds of engines

⚠️ 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.