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The K&N Engineering 03-04 Ford Thunderbird V8-3.9L Performance Cold Air Intake Kit is designed to enhance your vehicle's airflow and overall engine performance. Featuring a high-density polyethylene (HDPE) rotationally-molded tube, this intake system effectively increases the volume of incoming air, resulting in guaranteed improvements in horsepower and torque. The system's design ensures optimal airflow while maintaining durability and resistance to heat and engine bay conditions. Included is a washable, reusable High-Flow Air Filter with oiled cotton media, capable of going up to 100,000 miles between services under normal highway driving, making maintenance straightforward and cost-effective. A custom heat shield is integrated to protect the intake air from high engine bay temperatures, ensuring consistent performance and cooler air intake for your engine. Installation typically takes less than 90 minutes, making it an accessible upgrade for most enthusiasts and DIYers. The kit complies with EPA standards and is CARB EO approved under number D-269-31, although some models may not be legal for sale or use in California due to pollution regulations. This system is backed by K&N's No-Hassle Lifetime Limited Warranty, providing confidence in its durability and performance. Designed to fit 2003-2005 Ford Thunderbird models with V8-3.9L engines, this intake kit is a reliable upgrade that enhances engine efficiency and power output without compromising vehicle emissions standards.
Features:
Fitment:
2003 Ford Thunderbird Base
2003 Ford Thunderbird James Bond Edition
2004 Ford Thunderbird Base
2004 Ford Thunderbird Pacific Coast Roadster
2005 Ford Thunderbird 50th Anniversary Edition
2005 Ford Thunderbird Base
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).
