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The K&N Engineering 50-1583D NextGen Diesel Dryflow cold air intake system is engineered for Ram 2500 and Ram 3500 trucks with the L6 6.7L diesel engine. Its high-density polyethylene rotationally molded tube is designed to increase airflow volume by 29.9% CFM and is stated to provide gains of 16.7 horsepower and 40 torque without requiring a tune.
This intake system includes a washable, reusable Dryflow lifetime air filter with oil-free synthetic media. The oversized conical filter design allows service intervals of up to 50,000 miles under normal highway driving conditions. Its oil-free, two-step cleaning process helps simplify routine maintenance, while the synthetic media delivers up to 99% filtration efficiency.
A custom-designed NextGen air box helps protect incoming air from high engine-bay temperatures. The complete system can typically be installed in less than 60 minutes. This product is not CARB approved, and the supplier indicates that CARB acknowledgement is required.
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).
