K&N Engineering RU-1900 Universal Clamp-On Air Filter, 2.25-Inch Flange ID, 3.5-Inch OD, 2-Inch Height

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: 99-5000 Filter Care Service Kit Aerosol

• One year limited warranty

The K&N Engineering RU-1900 Universal Clamp-On Air Filter is designed for a wide range of automotive, racing, powersports, recreational, and equipment applications. Its universal configuration is suitable for air intakes with varying angles and offsets, making it a practical solution for custom installations, generators, snowmobiles, tractors, radio-controlled vehicles, and other compatible equipment.

Built for repeated use, the K&N RU-1900 features a washable and reusable filter element that helps reduce replacement waste and simplifies long-term maintenance. The molded, pliable rubber flange is designed to absorb vibration while providing a secure connection to the intake. The flexible flange can also accommodate slight variations between the intake and filter sizes, supporting a reliable fit for compatible applications.

The K&N Engineering RU-1900 has a 2.25-inch flange inside diameter, a 3.5-inch outside diameter, and a 2-inch overall height. It is intended for automotive use and includes a one-year limited warranty. For cleaning and re-oiling, K&N recommends the 99-5000 Filter Care Service Kit Aerosol. This product is not CARB approved, and the required emissions compliance acknowledgement should be reviewed before installation. Fitment depends on the intake configuration and available clearance; verify the flange size and application requirements before purchase.

What's Included

• One K&N Engineering RU-1900 Universal Clamp-On Air Filter
• One-year limited warranty coverage

Features:

• Universal Application: Designed for compatible automotive, racing, recreational, and equipment air-intake applications with varying intake angles and offsets.
• Washable and Reusable: The reusable filter element can be cleaned and serviced to support extended use and reduce the need for frequent replacement.
• Flexible Rubber Flange: Molded pliable rubber absorbs vibration and can accommodate slight fit variations for secure attachment.
• Compact Clamp-On Design: Provides a practical air-filtration solution where the intake matches the 2.25-inch flange inside diameter and available clearance.

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
Regular Stock: t
Units Per Sku: 1