K&N Engineering RU-3520 Universal Air Filter, 3.5-Inch Flange

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. 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. Associated products: 25-3900 Air Filter Foam Wrap, 99-5000 Filter Care Service Kit Aerosol

• One year limited warranty

The K&N Engineering RU-3520 Universal Air Filter is designed for a wide range of air-intake applications, including racing vehicles, generators, snowmobiles, tractors, radio-controlled vehicles, and other equipment. Its universal design accommodates various intake angles and offset configurations, making it a practical solution when a standard replacement filter is not suitable.

Built for dependable service, the K&N RU-3520 features a strong, pliable molded rubber flange that helps absorb vibration and maintain a secure connection to the intake tube. The flange can stretch slightly to help accommodate an in-between fit, supporting easier installation across compatible applications. The reusable filter construction can be washed and serviced instead of routinely discarded, helping provide long-term value when maintained according to K&N recommendations.

Key specifications and technical data:

• Brand: K&N Engineering
• Part Number: RU-3520
• Product Type: Universal air filter
• Flange Size: 3.5 inches
• Filter Shape: Round tapered design
• Construction: Washable and reusable filter media
• Flange Material: Molded, pliable rubber
• Warranty: One-year limited warranty

The K&N Engineering RU-3520 is intended for automotive and equipment applications requiring a universal air filter. Verify the intake connection, available clearance, and application requirements before installation. This product is not CARB approved and may require acknowledgement where applicable. Associated service products include the K&N 25-3900 Air Filter Foam Wrap and 99-5000 Filter Care Service Kit Aerosol.

What's included: One K&N Engineering RU-3520 Universal Air Filter.

Features:

• Universal Application: Designed for racing vehicles, generators, snowmobiles, tractors, radio-controlled vehicles, and other compatible equipment.
• Flexible Rubber Flange: Pliable molded rubber helps absorb vibration and supports a secure intake connection.
• Washable and Reusable: Serviceable construction allows the filter to be cleaned and reused with proper maintenance.
• Adaptable Fit: The flange can stretch slightly to help accommodate compatible intake sizes between standard measurements.

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Units Per Sku: 1