Description
The K&N Filters RU-1021 Universal Air Filter is engineered for versatility, suitable for a wide range of applications including racing vehicles, radio-controlled cars, generators, snowmobiles, and tractors. Its design accommodates various angles and offset diameters, ensuring a reliable fit for different setups.
This air filter features ultra-strong molded pliable rubber flanges that absorb vibration, allowing for secure attachment. The flanges can stretch up to 1/16 of an inch (1.5mm), providing flexibility for fitting in-between sizes. Additionally, the K&N RU-1021 is washable and reusable, making it an efficient choice for maintaining optimal airflow and performance over time.
Features
- Constructed with ultra-strong molded pliable rubber flanges
- Flanges can stretch for fitting in-between sizes
- Washable and reusable design
- Designed for a wide variety of applications
Frequently Asked Questions
What is the benefit of a washable air filter?
A washable air filter can be cleaned and reused, providing long-term cost savings and consistent performance.
How do I clean the K&N air filter?
The K&N air filter can be cleaned using K&N’s cleaning kit, which includes a cleaner and oil.
What applications can the K&N RU-1021 be used for?
The K&N RU-1021 is designed for various applications including racing vehicles, generators, and more.
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.










