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The K&N Engineering RU-1001 Universal Oval Rubber Air Filter is designed for a wide variety of applications, including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and other equipment. Its universal design accommodates air intakes with varying angles and offset diameters.
The filter features an ultra-strong molded, pliable rubber flange that helps absorb vibration and supports secure attachment. The flange can also stretch up to 1/16 inch to help accommodate applications that fall between sizes.
Washable and reusable, this K&N universal air filter is designed for repeated service rather than single-use replacement. Associated products include the RF-1001DK, RF-1001DL, and RF-1001DR Air Filter Wraps, along with the 99-5000 Filter Care Service Kit Aerosol.
This product carries a 1-year limited warranty. It is not CARB approved, and the supplier identifies it as requiring a CARB acknowledgement.
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).
