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The K&N Engineering Universal Rubber Air Filter (Part Number: knnRU-2590) is designed to provide reliable airflow for a wide range of applications including racing vehicles, generators, snowmobiles, tractors, and RC cars. Constructed with durable, flexible rubber flanges, this filter absorbs vibrations and allows for a secure fit across various equipment configurations. The flanges can be stretched up to 1/16 inch (1.5mm), accommodating different intake diameters to ensure a proper seal and optimal performance. Its universal design makes it highly versatile for many setups, regardless of angle or offset diameter, simplifying installation in diverse environments. The filter's high-quality washable and reusable construction ensures long-term durability and cost savings, making it an excellent choice for both professional and hobbyist users. Built for demanding conditions, this filter maintains consistent airflow and filtration efficiency, helping to improve engine performance and longevity. Please note that this filter is not CARB approved but requires acknowledgment of this for installation purposes. The K&N universal air filter combines rugged build quality with practical design features, providing a dependable solution for a broad spectrum of air intake needs.
Features:
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
