K&N Engineering RU-4250 Universal Rubber Air Filter, 3.75-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

• NO-HASSLE WARRANTY: 1-Year Limited Warranty

The K&N Engineering RU-4250 Universal Rubber Air Filter is designed for a wide range of automotive and equipment applications, including racing vehicles, generators, snowmobiles, tractors, and other engines requiring adaptable air filtration. Its universal design accommodates various intake angles and offset configurations, making it a practical choice when a conventional application-specific filter is not suitable.

Built with a strong, pliable molded rubber flange, the K&N RU-4250 helps absorb vibration while providing a secure connection to the intake tube. The flange can stretch slightly to help accommodate minor fitment variations. This reusable air filter is washable and serviceable, offering a long-term alternative to disposable filters when maintained with appropriate K&N cleaning and re-oiling products.

Brief Description: Reusable universal air filter with a pliable rubber flange for adaptable intake installation.
Key Product Specifications & Technical Data: Brand: K&N Engineering; Part Number: RU-4250; Product Type: Universal automotive air filter; Flange Inside Diameter: 3.75 inches; Base Outside Diameter: 5.375 inches; Top Outside Diameter: 4.375 inches; Filter Height: 5 inches; Warranty: 1-year limited warranty.
What's Included: One K&N Engineering RU-4250 universal rubber air filter. Optional associated products include the K&N 25-3900 Air Filter Foam Wrap and 99-5000 Filter Care Service Kit Aerosol.

This product is not CARB approved, and applicable emissions requirements should be verified before installation for street-driven vehicles. Fitment depends on the intake tube diameter, available clearance, intake angle, and application-specific requirements. Confirm compatibility with the equipment manufacturer or vehicle application before purchase.

Features:

• Universal Fitment: Designed for racing vehicles, generators, snowmobiles, tractors, and other applications with compatible intake requirements.
• Washable and Reusable: Can be cleaned and serviced for extended use instead of being replaced as frequently as a disposable filter.
• Pliable Rubber Flange: Molded rubber construction helps absorb vibration and supports a secure intake connection.
• Adaptable Installation: Flange flexibility helps accommodate minor variations between the filter opening and intake tube.

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