Description
The K&N Engineering RU-4250 universal rubber air filter is designed for a wide range of applications, including racing vehicles, generators, snowmobiles, tractors, and radio-controlled cars. Crafted with durability in mind, this filter features an ultra-strong molded pliable rubber flange that absorbs vibrations and ensures a secure fit. The flange is stretchable up to 1/16 inch (1.5mm), allowing for versatile installation in various intake angles and sizes. Its universal design makes it suitable for many equipment types, providing reliable airflow and filtration performance. As a washable and reusable filter, the RU-4250 offers long-term value and consistent performance, reducing maintenance costs and environmental impact. This filter is compliant with Prop 65 requirements, emphasizing safety and quality, though it is not CARB approved. With a 1-year limited warranty, K&N’s product guarantees durability and customer satisfaction. Whether for off-road, industrial, or recreational use, this filter provides an excellent solution for ensuring your equipment receives clean, unrestricted airflow. Its compact yet effective design makes it ideal for a variety of applications where space and performance are crucial. Invest in the trusted quality of K&N Engineering for your filtration needs and experience improved engine efficiency and longevity.
Features:
- Universal fit for a variety of equipment including racing vehicles, generators, snowmobiles, and more
- Constructed with durable, pliable rubber flange for vibration absorption and secure attachment
- Stretchable flange allows for up to 1/16 inch (1.5mm) adjustment to fit different sizes
- Washable and reusable design for long-term use and cost savings
- Prop 65 compliant, ensuring safety and environmental standards





















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