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The K&N Engineering 57-2555 Performance Intake Kit is designed for the 2003-2004 Ford Mustang Mach 1 with the 4.6L DOHC V8 engine. Its high-density polyethylene rotationally molded tube is engineered to increase airflow to the engine, with a guaranteed increase in horsepower and torque. The intake system is paired with a washable, reusable High-Flow Air Filter that uses oiled cotton filter media.
The oversized conical filter design can provide service intervals of up to 100,000 miles under normal highway driving conditions. A custom heat shield helps protect incoming air from high engine-bay temperatures, supporting consistent intake performance. The complete system can typically be installed in less than 90 minutes.
This K&N intake kit is covered by the K&N Million Mile Limited Warranty and is designed not to void the vehicle warranty. The product is EPA compliant and carries California Air Resources Board Executive Order D-269-28. Refer to applicable vehicle and emissions requirements before installation or use.
Part number 57-2555 is supplied as one automotive intake kit. Associated products include K&N air filter wraps, the RU-1041 Universal Clamp-On Air Filter, and the 99-5000 Filter Care Service Kit Aerosol.
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).
