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.
- ENGINEERED POWER: State-of-the-art air filter media is designed to increase horsepower and acceleration as well as improve overall engine performance
| Attributes | |
| Air Filter Color | Red |
| Air Filter Material | Cotton Gauze |
| Air Filter Shape | Round Tapered |
| Base Outside Diameter | 6 in (152 mm) |
| California Proposition 65 | WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Country of Origin (Primary) | US |
| Emission Code | Legal US |
| Filter Re-Oiling Amount | 1.19 oz (35 ml) |
| Flange Angle | 0 degrees |
| Flange Inside Diameter | 3.25 in (83 mm) |
| Flange Length | 1.469 in (37 mm) |
| Flange Offset | 0 in (0 mm) |
| Flange Type | Centered |
| Flanges | 1 |
| Frame Design | Flexible |
| GTIN | 00024844409348 |
| Harmonized Tariff Code (Schedule B) | 8421310000 |
| Height | 5.5 in (140 mm) |
| Item Type | High Performance |
| Life Cycle Status Code | Available to Order |
| NAFTA Preference Criterion Code | B |
| Oil Included | Yes |
| Package Contents | 1 Air Filter |
| Package Material | Paperboard |
| Package Quantity | 1 |
| Package Type | Box |
| Pre-Screened | No |
| Product Style | Round Tapered Universal Air Filter |
| SDR Required Flag | N |
| Top Material | None |
| Top Outside Diameter | 5.125 in (130 mm) |
| Top Style | Rubber |
| Warranty | 1 Year Limited |
| Washable | Yes |
| Weight | 1.3 lb (0.6 kg) |
K&N RU-4490 Universal Clamp-On Air Filter
Product Information
- Brand: K&N
- Product Number: RU-4490
- Availability: Call for Availability

















