K&N Universal Rubber Filter 6.25in x 4in Oval FLG / 7.375in x 5.5in Base / 6.25in x 4in Top / 5in H

K&N Universal Rubber Filter 6.25x4in Oval FLG | 5in H

Boost airflow and horsepower with the K&N Universal Oval Rubber Air Filter. Features a 4" flange, washable oil-treated cotton media, and extreme durability.

Designed to increase horsepower and acceleration, the K&N Universal Rubber Oval Air Filter delivers industry-leading filtration and high airflow for custom, racing, or performance intake applications. Engineered with multiple layers of oiled cotton gauze media, this filter traps harmful contaminants while allowing significantly more air into your engine compared to standard paper filters.

The molded pliable rubber flange absorbs vibration and allows for a secure, airtight fit across custom intakes. Built with ultra-durable rubber top and base plates, this filter is fully washable, reusable, and built to last the lifespan of your vehicle or equipment.

Best Uses

1. Custom engine intake builds (hot rods, custom cars, and modified street vehicles).
2. Motorsports and racing applications requiring high-flow, low-restriction air intake.
3. Off-road vehicles and generators where intake space demands an oval footprint.

Features

1. High-Flow Oiled Cotton Media: Multi-layered, oiled cotton gauze provides maximum airflow with exceptional filtration efficiency.
2. Flexible Rubber Flange: Pliable rubber absorbs engine vibration and stretches up to 1/16" for precise fitment over intake tubes.
3. Compact Oval Design: Designed to maximize surface area and airflow in space-constrained engine bays.
4. Washable & Reusable: Engineered to be cleaned and re-oiled repeatedly using a K&N Recharger kit.
5. Durable Molded Tops/Bases: Heavy-duty rubber end caps resist cracking, heat degradation, and chemical exposure.

Benefits

1. Increased Horsepower & Acceleration: Reduces intake restriction to deliver noticeable gains in engine output and throttle response.
2. Long-Term Cost Savings: Eliminates the need to repeatedly purchase disposable paper filters.
3. Engine Protection: Captures fine dust and particulates to prevent internal engine wear without sacrificing airflow.
4. Extended Service Intervals: Holds significant amounts of dirt, requiring cleaning only every 50,000 miles under normal highway driving conditions.
5. Eco-Friendly Choice: Reusable design reduces waste in landfills compared to single-use disposable air filters.