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The K&N Engineering Universal Rubber Air Filter (Part Number: knnRU-5144) is designed to provide reliable airflow filtration across a wide range of applications including racing vehicles, generators, snowmobiles, tractors, and radio-controlled cars. Its versatile design ensures compatibility with various air intake angles and offset diameters, making it suitable for many different equipment setups. Constructed with ultra-strong molded pliable rubber flanges, this filter absorbs vibrations and allows for a secure fit, while the stretchable flange can accommodate sizes up to 1/16 inch (1.5mm) for a precise installation. The durable rubber material ensures a snug, vibration-resistant attachment, enhancing the longevity and performance of your equipment. The filter's dimensions include a 2.75-inch flange diameter, a 4.75-inch base, a 4-inch top, and an overall height of 8 inches, making it a compact yet efficient filtration solution. Designed for easy maintenance, the filter is washable and reusable, allowing you to clean and reinstall for continued use, which reduces replacement costs and promotes eco-friendly operation. It is important to note that this filter is not CARB approved and requires acknowledgment of CARB regulations before use. The filter's construction and design make it an ideal choice for those seeking a versatile, durable, and reusable air filtration option for various automotive and equipment applications. Whether upgrading an existing system or installing on a new setup, this universal air filter offers dependable performance and easy installation. Its compatibility with numerous equipment types ensures maximum utility and value, making it a practical addition to your maintenance toolkit.
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).
