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The K&N Engineering X-Stream Top Filter Part Number KN66-3110 is designed to optimize engine airflow and improve performance. Featuring a unique internal airflow redirection system, this filter increases the amount of air pulled through the side pleats, resulting in enhanced engine efficiency and power output. Its innovative design not only provides a larger filter surface area but also promotes more even airflow distribution, leading to better filtration and engine protection. The filter is constructed with durable, high-quality materials that ensure long-lasting performance and reliable filtration over extended service intervals. Being cleanable and reusable, the X-Stream Top Filter offers a cost-effective solution for maintaining optimal engine airflow without the need for frequent replacements. This filter is suitable for a wide range of automotive applications where maximum airflow and filtration are desired, making it an excellent upgrade for performance enthusiasts and professional mechanics alike. Easy to install, it fits standard 11-inch openings with a 5.125-inch neck flange and stands approximately 3.5 inches tall, providing a seamless fit and improved airflow dynamics. As a product from K&N Engineering, known for quality and innovation, this filter ensures your engine receives superior protection and airflow, contributing to improved horsepower, acceleration, and overall vehicle performance. Its robust construction and thoughtful design make it a valuable addition to any vehicle seeking enhanced breathing capabilities. Please note, this product complies with Prop 65 requirements and is not CARB-approved, requiring acknowledgment of these specifications during purchase.
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).
