Description
The K&N Filters RU-3690 Universal Air Filter is engineered for a wide range of applications, including racing vehicles, radio-controlled cars, generators, snowmobiles, and tractors. This filter stands out with its innovative construction, featuring ultra-strong molded pliable rubber flanges that absorb vibration and allow for secure attachment. The flanges can also stretch for up to 1/16 of an inch (1.5mm) to accommodate different sizes.
Designed for performance, the RU-3690 is both washable and reusable, providing an eco-friendly option for air filtration. Its unique design ensures that regardless of the angle or offset diameter of the air intake, there is a K&N Universal air filter that meets your needs. This versatility makes it an ideal choice for various applications, ensuring optimal air delivery and enhancing the overall performance of your equipment.
Features
- Constructed with ultra-strong molded pliable rubber flanges
- Flanges can stretch for up to 1/16 of an inch (1.5mm)
- Washable and reusable design
- Designed for a wide variety of applications
Frequently Asked Questions
What is the primary function of the K&N Filters RU-3690?
The primary function is to provide efficient air filtration for various applications.
Can the RU-3690 filter be reused?
Yes, the K&N Filters RU-3690 is washable and reusable.
What materials are used in the construction of the RU-3690?
The filter features ultra-strong molded pliable rubber flanges.
Manuals & Instructions
âš WARNING (California Proposition 65): WARNING: Cancer and Reproductive Harm – www.p65warnings.ca.gov

Not CARB approved. This item is not legal for sale or use on pollution-controlled motor vehicles in California or states that adopt California emissions standards. Intended for off-road / competition use where permitted by law.











