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The K&N Engineering NextGen Diesel Dryflow cold air intake system is engineered for select 2017-2019 Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, and GMC Sierra 2500 HD applications with a V8 6.6L diesel engine. Part number 50-3101D uses a high-density polyethylene rotationally molded tube designed to increase airflow volume by 44.2% CFM gain.
Under the stated testing conditions, the system provides an increase of 20.5 horsepower and 35.4 torque without requiring a tune. A custom-designed NextGen air box helps protect incoming air from high engine-bay temperatures, while the complete system can typically be installed in less than 60 minutes.
The washable, reusable Dryflow lifetime air filter features oil-free synthetic media and an oversized conical design. Under normal highway driving conditions, filter service intervals can extend up to 50,000 miles. Maintenance uses a convenient two-step cleaning process and does not require oil. The filter media delivers up to 99% filtration efficiency.
This product is not CARB approved. Review vehicle fitment and applicable emissions requirements before installation.
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).
