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The K&N Engineering 33-5065HBK Diesel Dryflow Lifetime Engine Air Filter is designed as a washable, reusable replacement for the factory air box in select 2017 Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD applications with a 6.6L diesel engine. Its drop-in design is intended to support straightforward installation in the original air box.
Built with layered cotton and synthetic filter media, this K&N Diesel Dryflow filter is engineered to improve airflow while capturing contaminants before they reach the engine. The performance air filter is also designed to provide an increase in horsepower, helping support the airflow demands of compatible heavy-duty diesel applications.
Because the filter is washable and reusable, it is engineered to last for the entire lifespan of the vehicle when properly maintained. K&N backs the filter with its No-Hassle Lifetime Limited Warranty. Associated maintenance support includes K&N 99-0624 Synthetic Filter Cleaner, available separately.
Proudly designed, engineered, and made in the USA, the filter uses premium materials and is supported by dedicated U.S.-based customer service. Review vehicle fitment carefully before ordering to confirm application compatibility.
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).
