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The K&N Engineering Universal Rubber Round Air Filter (Part Number: knnRU-1720) is designed to provide versatile and reliable air filtration for a wide range of applications including racing vehicles, generators, snowmobiles, tractors, and RC cars. Crafted with durable, molded pliable rubber flanges, this filter absorbs vibrations and ensures a secure attachment, even allowing for stretchability of up to 1/16 inch to accommodate slight size variations. Its universal design makes it suitable for various angles and offset diameters, simplifying installation across different equipment types.
Constructed for repeated use, the K&N universal air filter is washable and reusable, promoting longevity and cost-effectiveness. The 2.25-inch inside diameter flange combined with a 3.5-inch outer diameter and a total height of 6 inches makes it a versatile fit for many air intake systems. Its rugged design, along with high-quality materials, ensures it can withstand demanding environments while maintaining optimal airflow. This filter is not CARB approved but requires acknowledgment of CARB regulations, making it suitable for most non-road applications where compliance is not mandated.
The K&N Universal Rubber Round Air Filter is a dependable choice for enthusiasts and professionals seeking a high-performance, adaptable filtration solution that offers ease of maintenance and broad compatibility. Its compact size and flexible fitting options make it an ideal upgrade or replacement for various small engines and air intake setups.
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).
