K&N Universal Clamp-On Air Filter 3in FLG /4 1/2in B / 3 1/2in T / 4 3/8in H

K&N Universal Clamp-On Air Filter: 3" Flange, High-Flow Performance

Boost horsepower and airflow with the K&N Universal Clamp-On Air Filter (3" Flange, 4.375" Height). Washable, reusable cotton gauze filtration for long-term engine protection.

The K&N Universal Clamp-On Air Filter is engineered to increase horsepower and throttle response by providing up to 50% more airflow than standard disposable paper filters. Designed with a round tapered shape, this filter features a 3-inch inside diameter flange, a 4.5-inch base, a 3.5-inch top, and a 4.375-inch height.

Constructed with premium, multi-layered oiled cotton gauze media, it effectively traps dust and road debris while maintaining optimal air pass-through. The heavy-duty, pliable rubber flange absorbs engine vibration and can stretch up to 1/16 of an inch (1.5 mm) for a snug, secure clamp-on fitment on custom intake setups. Washable and reusable, this environmentally friendly filter is built to last the life of your equipment.

Best Uses

1. Custom Engine Intakes: Ideal for custom cold air intake assemblies requiring a 3-inch clamp-on filter inlet.
2. Performance Vehicles & Motorsport: Great for track cars, custom automotive builds, and racing applications that demand high airflow.
3. Powersports & Off-Road Equipment: Fits snowmobiles, ATVs, tractors, and generators with compatible 3-inch intake piping.
4. Tight Engine Bays: The compact 4.375-inch height and tapered design make it suitable for tight clearance engine compartments.

Features

1. Premium Cotton Gauze Media: Features oiled, multi-layered woven cotton fibers designed to capture dirt and debris while maximizing air flow.
2. Pliable Molded Rubber Flange: Ultra-strong rubber construction absorbs engine vibration and stretches up to 1/16 inch for precise fitment.
3. Washable & Reusable: Can be easily cleaned and re-oiled for repeated use, eliminating the need for single-use replacement filters.
4. Precision Tapered Dimensions: Designed with a 3" flange ID, 4.5" base OD, 3.5" top OD, and 4.38" height for versatile application.
5. Clamp-On Attachment: Includes a heavy-duty worm-gear clamp for rapid, secure installation with basic hand tools.

Benefits

1. Enhanced Engine Performance: Delivers increased airflow to support higher horsepower and faster throttle response.
2. Long-Term Cost Savings: The washable design saves money over time compared to buying disposable paper air filters.
3. Superior Filtration Protection: Traps harmful contaminants to keep your engine protected under diverse driving conditions.
4. Eco-Friendly Solution: Reduces landfill waste by replacing multiple single-use disposable filters over the vehicle's lifespan.
5. Easy Maintenance: Low-maintenance media requires cleaning only after extended driving intervals under standard highway conditions.