
RU-4680 Clamp-on Air Filter - Universal - 4 in. Flange ID, 7 in. H
K&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16 of an inch (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable.
- Designed to increase horsepower and acceleration
- Hundreds of sizes and shapes for most applications
- High air flow with excellent filtration
- High air flow with excellent filtration
- Clamp-on washable and reusable air filter
- Malleable flanges
Breakthrough Air Filtration Design
K&N high-performance air filters improve acceleration and increase horsepower output. These durable filters are available in a multiple-layer pleated, high-flow oiled cotton gauze or dryflow to enhance filtration and overall performance. Each OE-style air filter provides virtually unrestricted air flow with exceptional filtration and is washable, reusable, and environmentally friendly.

