K&N 3.75 Inch OD 2.438 Inch ID 4 inch H Round Tapered Universal Air Filer

K&N 3.75" OD x 2.438" ID x 4" H Round Tapered Air Filter

Boost engine airflow with the K&N Universal Round Tapered Air Filter (2.438" ID x 3.75" OD x 4" H). Washable, reusable, and built for maximum performance.

Engineered to increase horsepower and acceleration, the K&N Round Tapered Universal Clamp-On Air Filter delivers world-class filtration and high airflow in a compact package. Constructed with multiple layers of oiled, pleated cotton gauze between aluminum wire mesh screens, this filter captures harmful contaminants without restricting air intake. The flexible rubber flange absorbs engine vibration while providing a secure, airtight seal on custom intakes, intake tubes, or equipment applications. Built to last the lifetime of your vehicle, it offers a sustainable, high-performance alternative to disposable paper filters.

Best Uses

1. Custom cold-air intakes or custom air box builds in sports cars and hot rods.
2. Motorcycles, ATVs, and UTVs with 2.438" (2-7/16") intake tube connections.
3. Go-karts, small engines, and motorsport racing applications requiring tight-clearance fitment.
4. Marine, generator, or industrial equipment upgrades requiring reliable dust and dirt filtration.

Features

1. High-Flow Cotton Media: Premium multi-layer oiled cotton gauze designed to maximize airflow while stopping dirt particles.
2. Universal Clamp-On Flange: Flexible 2.438-inch inner diameter rubber flange stretches slightly for a snug, secure fit on intake tubing.
3. Round Tapered Profile: 3.75-inch base outer diameter tapering down over a 4-inch height to maximize surface area in tight engine bays.
4. Washable & Reusable: Designed to be cleaned and re-oiled using a K&N Recharger Kit, eliminating the need for replacement filters.
5. Pliable Molded Rubber Base & Top: Durable rubber construction resists degradation, petroleum exposure, and severe vibration.

Benefits

1. Increased Power & Throttle Response: Lower airflow restriction feeds more air to the engine, improving horsepower and acceleration.
2. Long-Term Cost Savings: Buy once and reuse for years, saving money compared to frequent disposable paper filter swaps.
3. Engine Protection: Advanced oil-treated media catches microscopic particles to safeguard engine components against wear.
4. Eco-Friendly Choice: Reduces landfill waste by replacing dozens of throwaway paper filters over the lifespan of the vehicle.
5. Versatile Installation: Compact size and clamp-on mounting make it easily adaptable across custom automotive, powersports, and industrial setups.