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The K&N Engineering Universal Oval High-Flow Air Filter Part E-3671 is designed to deliver exceptional airflow and engine performance for a variety of vehicles. Featuring a state-of-the-art layered, oiled cotton media, this filter effectively captures contaminants while allowing increased airflow, which can lead to noticeable horsepower gains. Its durable construction ensures long-lasting use, making it a smart upgrade for vehicle enthusiasts seeking reliable, high-performance air filtration.
Installation is straightforward with this drop-in replacement filter, designed to fit seamlessly into your factory air box. The K&N E-3671 is engineered to last for the entire lifespan of your vehicle, backed by the company's 10-Year/Million Mile Limited Warranty. Its washable and reusable design means you can clean and reuse it multiple times, reducing waste and ongoing replacement costs. This filter not only enhances engine performance but also provides reliable engine protection, ensuring your vehicle runs smoothly over the long term.
Whether you are upgrading a performance vehicle or restoring a classic, the K&N High-Flow Air Filter offers an effective solution for improving airflow and engine efficiency. Its high-quality construction and proven design make it one of K&N*s most popular products among automotive enthusiasts. Please note that this filter is not CARB approved but is designed to meet the needs of most performance applications while requiring acknowledgment of compliance. Enjoy better throttle response, increased horsepower, and superior filtration with the K&N E-3671 high-flow air filter, a trusted choice for automotive performance upgrades.
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).
