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The K&N Engineering E-0776HBK Diesel Dryflow Engine Air Filter is a washable, reusable replacement filter designed for select 2003–2004 Dodge Ram applications with the L6-5.9L diesel engine. Its layered cotton and synthetic filter media is engineered to improve airflow while capturing contaminants, helping support increased horsepower.
Designed as a drop-in replacement, this performance air filter installs into the factory air box. The reusable construction is engineered to last for the entire lifespan of the vehicle, reducing the need for repeated disposable filter replacements. Cleaning product 99-0624 Filter Cleaner is listed as an associated product.
The filter is proudly designed, engineered, and made in the USA using premium materials and is supported by dedicated, U.S.-based customer service. It is backed by K&N's No-Hassle Lifetime Limited Warranty. This product requires a California Air Resources Board acknowledgment.
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).
