K&N RU-4410 Round Tapered Universal Clamp-On Air Filter, 3.5in Flange

Vehicle Fitment

• Universal - not vehicle-specific; designed for a wide range of applications including racing vehicles, ATVs, generators, snowmobiles, and tractors

Fitment Notes

• Clamp-on design fits carburetor or intake necks matching the 3.5 in. flange diameter; rubber flange can stretch up to 1/16 in. to accommodate in-between sizes
• Compact 3 in. overall height makes this a fit for tight-clearance installations where a taller filter won't clear the hood or bodywork
• Not a direct factory drop-in for any specific make or model - match your carburetor throat OD to the filter's ID before ordering

Features

• Four layers of premium cotton gauze treated with a specially designed tacking agent
• Intricate filter media mesh designed to block and trap harmful contaminants
• Flexible frame design allows for a snug, secure fit even in tight spaces
• Ultra-strong molded pliable rubber flange absorbs vibration for a secure attachment
• Flange can stretch up to 1/16 in. (1.5mm) to fit in-between sizes
• Washable and reusable, rated for approximately 75,000 miles between cleanings
• Designed to increase horsepower and acceleration through improved airflow
• Pre-oiled and ready for easy installation

Specifications

• Shape: Round Tapered
• Filter Material: Cotton gauze
• Flange (Inside) Diameter: 3.5 in.
• Base Outside Diameter: 4.625 in.
• Top Diameter: 3.5 in.
• Height: 3 in.
• Flange Length: 0.625 in.
• Flange Type: Centered
• Top Style: Rubber
• Fitment Type: Universal clamp-on

Included Components

• 1x K&N RU-4410 Round Tapered Universal Air Filter

Product Description

The K&N RU-4410 is a compact, round tapered universal air filter designed to mount directly onto a carburetor throat or intake neck rather than a single vehicle's factory air box. With a 3.5 in. flange diameter and a low 3 in. overall height, it's well suited to engine bays with limited vertical clearance where a taller filter wouldn't fit under the hood.

Built from four layers of cotton gauze treated with K&N's tacking agent, the RU-4410 is engineered to trap contaminants while supporting strong airflow for a boost in horsepower and acceleration. The flexible frame and pliable rubber flange absorb vibration for a secure hold, even in tight installation spaces, and the flange can stretch slightly to accommodate intake necks that fall between standard sizes.

This filter is a good fit for builders and enthusiasts working on carbureted engines, ATVs, or custom intake setups where low clearance is a priority. Since it's a clamp-on universal filter, match your carburetor throat's outside diameter to the filter's 3.5 in. inside diameter before ordering, and wash and re-oil it with K&N's cleaning kit when it gets dirty to keep it performing like new.