How often should I clean and re-oil 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. K&N sells filter cleaning and oiling kits to maintain your filter.

What size is the flange?

The flange on the K&N RU-2780 is 2 7/16 inches. The rubber is slightly flexible, so it can stretch a bit to fit different sizes.

Is this filter legal in California?

No, this filter is not CARB-approved and cannot be shipped to California. Check your local regulations for compliance.

K&N Filter Universal Rubber Filter 2 7/16 inch Flange 4.5x3.75 inch Base 3.5x2.5 inch Top 2.75 inch

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K&N Engineering

K&N Filter Universal Rubber Filter 2 7/16 inch Flange 4.5x3.75 inch Base 3.5x2.5 inch Top 2.75 inch

Name: K&N Filter Universal Rubber Filter 2 7/16 inch Flange 4.5x3.75 inch Base 3.5x2.5 inch Top 2.75 inch
Brand: K&N Engineering
Price: 57.99 USD
Availability: InStock

$57.99

Universal K&N air filter with rubber flange. Clean and reuse it for long-lasting performance.

Key Features

Universal fit — works on a variety of applications
Washable filter — clean and re-oil for long filter life
Rubber flange — allows secure attachment and absorbs vibration

⚠️ 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

Yamaha TDM850 1992-1993

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Product Details

Regardless of the angle or offset diameter of an air intake, there is probably a K&N Universal air filter for your equipment. K&N universal air filters are washable and reusable.
2-7/16in.FLG; 4-1/2in. X 3-3/4in.B; 3-1/2in. X 2-1/2in.T; 2-3/4in.H

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.