How do I clean this filter?

Use K&N filter cleaner and air filter oil to service this filter. Clean and re-oil as needed to maintain proper airflow and filtration.

What is the flange made of?

The flange is made from pliable rubber. This allows the filter to be mounted securely and also allows it to stretch up to 1/16 of an inch to fit in-between sizes.

Is this filter street legal?

This filter is not CARB-approved. That means it is not legal for street use in California and cannot be shipped there.

K&N RB-0510 Universal Air Filter | 2.125in Flange

Name: K&N Universal Rubber Filter 2.125in Flange ID 3.5in Base OD 3.5in Top OD 5in Height
Brand: K&N
SKU: k-n-engineering-k-n-universal-rubber-filter-2-125in-flange-id-3-5in-base-od-3-5i-t14-472738
Price: 49.72 USD
Availability: BackOrder

K&N Universal Rubber Filter 2.125in Flange ID 3.5in Base OD 3.5in Top OD 5in Height

$49.72

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Universal fit K&N air filter with rubber flange. Clean and re-oil it for long life.

Key Features

Washable design — Clean and re-oil for long filter life
Universal fit — Works on many different applications
Rubber flange — Absorbs vibration and 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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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.K&N Individual Round Style Stacks for "Early Type" Fuel Injectors (Single Stacks) for Chevrolet, Etc. - Filters designed to fit with cut velocity stacks, or straight pieces of exhaust tubing. Rubber filter bases come with molded in velocity stack type radius and step, for smooth bore down from element to tube. Each filter has a rubber top with a stamped K&N logo. As with all K&N air filters, these are washable and reusable. Simply use K&N oil and cleaner to service your filter.