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The K&N Engineering Part Number RX-3800 Universal XStream Top Air Filter is designed to enhance your vehicle's airflow and filtration efficiency. Featuring a innovative filter within a filter design, this air filter provides a larger filtering surface area, resulting in higher airflow and extended service intervals. Its construction includes a durable, molded pliable rubber flange that absorbs vibrations, ensuring a secure fit and allowing for slight size adjustments to accommodate different intake setups. This makes it a versatile choice for racers and automotive enthusiasts seeking optimal performance. The washable and reusable design of the K&N XStream Top Air Filter ensures long-term value and consistent performance, reducing the need for frequent replacements. Whether you're racing or driving in demanding environments, this filter offers outstanding airflow combined with reliable filtration, helping your engine breathe easier and perform at its best. The product measures approximately 4 inches tall with a 2.44-inch flange diameter, making it suitable for a wide range of vehicle applications. Designed with quality and performance in mind, the K&N RX-3800 is a dependable upgrade for your vehicle's intake system, delivering increased power and improved engine efficiency. Its construction and features make it an excellent choice for those looking to maximize airflow and filtration while maintaining durability and ease of maintenance.
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).
