K&N Universal Clamp-On Air Filter 5in FLG / 6-1/2in B / 5in T / 6-1/2in H

K&N Universal Clamp-On Air Filter (5" Flange, 6.5" Base) | RU-1037

Boost performance with the K&N Universal Clamp-On Air Filter (RU-1037). Features 5" Flange, high-flow oiled cotton design, and washable, reusable construction.

The K&N Universal Clamp-On Air Filter (Part # RU-1037) is engineered to increase horsepower and acceleration while offering exceptional engine protection. Designed with a 5-inch flange diameter, 6.5-inch base diameter, 5-inch top diameter, and 6.5-inch overall height, this conical air filter adapts easily to a wide variety of custom intake applications.

Constructed with multiple layers of oiled cotton gauze media sandwiched between aluminum wire screen, the filter provides low restriction and high airflow while trapping dust and contaminants. Its ultra-strong molded pliable rubber flange absorbs engine vibration, ensures a leak-free seal, and can stretch up to 1/16 of an inch (1.5mm) to fit slight variations in intake pipe sizing.

Best Uses

1. Custom Engine Swaps & Custom Intakes: Ideal for custom-built air intake systems on modified street cars or hot rods needing a high-flow 5-inch inlet.
2. Motorsports & Racing Vehicles: Built to deliver maximum airflow required under high-RPM track and drag racing conditions.
3. Trucks & Off-Road Builds: Works exceptionally well for high-displacement trucks, off-road buggies, or modified 4x4 vehicles requiring high-volume air intake.
4. Industrial & Heavy Equipment: Suitable for high-horsepower generators, tractors, and agricultural equipment requiring durable filtration.

Features

1. Pliable Molded Rubber Flange: Built with a durable rubber flange that absorbs vibration and stretches up to 1/16 inch for precise fitment.
2. Multi-Layer Oiled Cotton Media: Features layers of premium cotton gauze to provide superior airflow without compromising filtration.
3. Washable and Reusable: Designed to be cleaned and re-oiled for lifetime serviceability, eliminating the need for disposable paper filters.
4. Precision Conical Shape: Specs feature a 5in Flange / 6.5in Base / 5in Top / 6.5in Height, optimizing intake surface area in tight engine bays.
5. Clamp-On Design: Includes a heavy-duty worm-gear clamp for a secure, simple installation directly onto intake piping.

Benefits

1. Increased Horsepower & Torque: Delivers higher air volume to the engine, improving acceleration and engine responsiveness.
2. Cost-Effective Long-Term Savings: Reusable construction allows you to wash and re-use the filter, saving money over time.
3. Exceptional Engine Protection: Captures microscopic harmful dirt and debris to keep your internal engine components safe.
4. Flexible & Versatile Fitment: The flexible rubber flange fits custom setups smoothly without air leaks or cracking over time.
5. Eco-Friendly Choice: Reduces environmental waste by replacing disposable single-use filters.

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