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Enhance your Audi A4 or A6 with the K&N 57i Series Performance Intake Kit, designed specifically for models ranging from 1996 to 2001. This intake kit replaces the restrictive factory air box, allowing for increased airflow and improved engine performance. The kit includes a large, washable, and reusable K&N air filter that provides high airflow capacity and captures more dirt particles than standard filters, offering up to 100,000 miles of service before cleaning is necessary. The open-air filter design maximizes surface area, which reduces airflow restriction across a broad RPM range, resulting in noticeable power gains and better throttle response. The installation process involves attaching the filter directly to the throttle body or via a tube assembly, with high-quality adapters made from durable materials like steel, aluminum, silicon, or reinforced nylon ensuring long-lasting performance. This kit is engineered to optimize airflow without compromising engine safety and is backed by K&N*s No-Hassle Lifetime Limited Warranty. Please note that this product is not legal for use in California or other states adopting California emission standards. Designed for ease of installation, the intake kit is an economical upgrade for enthusiasts seeking enhanced engine performance and efficiency. Whether you're upgrading for better power or a more aggressive intake sound, the K&N 57i Series offers a reliable solution tailored to your vehicle*s specifications.
Features:
Fitment:
1996 Audi A4 Base
1996 Audi A4 Quattro Base
1997 Audi A4 Base
1997 Audi A4 Quattro Base
1997 Audi A6 Avant
1997 Audi A6 Base
1997 Audi A6 Quattro Avant
1997 Audi A6 Quattro Base
1998 Audi A4 Avant
1998 Audi A4 Base
1998 Audi A4 Quattro Avant
1998 Audi A4 Quattro Base
1998 Audi A6 Base
1998 Audi A6 Quattro Avant
1998 Audi A6 Quattro Base
1999 Audi A4 Base
1999 Audi A4 Quattro Avant
1999 Audi A4 Quattro Base
1999 Audi A6 Base
1999 Audi A6 Quattro Avant
1999 Audi A6 Quattro Base
2000 Audi A4 Base
2000 Audi A6 Base
2000 Audi A6 Quattro Avant
2000 Audi A6 Quattro Base
2001 Audi A4 Base
2001 Audi A6 Base
2001 Audi A6 Quattro Avant
2001 Audi A6 Quattro 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.
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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).
