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The K&N Engineering Universal Rubber Air Filter (Part #knnRB-0900) is designed to deliver reliable airflow for a wide range of applications, including racing vehicles, generators, snowmobiles, tractors, and radio-controlled cars. Crafted with durable, pliable rubber flanges, this filter ensures a secure fit while absorbing vibrations, reducing the risk of damage during operation. The flexible flange can be stretched up to 1/16 inch to accommodate slight variations in intake sizes, making it a versatile choice for various equipment setups. Its robust construction and washable, reusable design contribute to cost-effective maintenance and consistent performance over time. Designed for ease of installation, this filter's compact dimensions fit comfortably into tight spaces, ensuring optimal airflow without compromising engine efficiency. Whether used in high-performance racing or everyday machinery, the K&N universal air filter provides dependable filtration and airflow, helping your equipment operate smoothly and efficiently. Note that this filter is not CARB approved and requires acknowledgment of this status before installation.
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).
