Description
The K&N Filters RU-5321 Universal Air Filter is engineered for a wide array of applications, including racing vehicles, radio-controlled cars, generators, snowmobiles, and tractors. This filter stands out with its unique design that accommodates different angles and offset diameters of air intakes, ensuring versatility in performance.
Constructed with ultra-strong molded pliable rubber flanges, the RU-5321 absorbs vibrations for secure attachment and can stretch up to 1/16 of an inch (1.5mm) to fit various sizes. The washable and reusable nature of this air filter not only provides convenience but also promotes longevity, making it a practical choice for enthusiasts and professionals alike. With K&N’s commitment to quality, this air filter is a reliable solution for enhancing airflow in your equipment.
Features
- Constructed with ultra-strong molded pliable rubber flanges
- Flanges absorb vibration for secure attachment
- Can stretch for up to 1/16 of an inch (1.5mm) to fit in-between sizes
- Washable and reusable design
- Designed for various applications including racing vehicles and generators
Frequently Asked Questions
What is the K&N Filters RU-5321?
The K&N Filters RU-5321 is a universal air filter designed for various applications.
Is the K&N Filters RU-5321 washable?
Yes, the RU-5321 is washable and reusable.
What materials are used in the construction of the RU-5321?
The air 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.







