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The K&N Engineering Universal Clamp-On Air Filter Part Number RN-1090 is designed to provide optimal airflow and filtration for a wide range of applications including racing vehicles, generators, snowmobiles, tractors, and RC cars. Featuring a versatile design, this filter adapts to various angles and offset diameters, making it suitable for many custom and standard setups. Crafted with durable, pliable rubber flanges, it absorbs vibration and ensures a secure fit while allowing for slight stretching to accommodate slightly different sizes, up to 1/16 inch. This flexibility simplifies installation and enhances the longevity of the filter in demanding environments.
Constructed with high-quality materials, the K&N universal air filter is washable and reusable, offering an eco-friendly solution that maintains peak performance over time. Its design emphasizes ease of maintenance, allowing users to clean the filter regularly without the need for replacement, thus reducing long-term costs. The filter's dimensions*measuring approximately 6 inches in height with a 3 1/2 inch outer diameter*make it a versatile choice for various equipment and setups. Its robust construction and flexible rubber flange ensure a tight seal and reliable operation across different applications.
Whether used in racing, recreational, or industrial equipment, the K&N RN-1090 provides dependable airflow and filtration. Its compatibility with multiple angles and sizes makes it an adaptable option for custom projects, while its washable nature promotes sustainability. This filter adheres to Prop 65 standards, emphasizing safety and environmental responsibility, and it is an ideal upgrade for improving engine performance and airflow efficiency in your equipment.
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).
