2017-2019 Duramax L5P Banks Cold Air Intake Kit (42249)
The Banks Power 42249 Cold Air Intake for the 2017-2019 L5P Duramax will get rid of your restrictive stock intake system and allow your 6.6L Duramax to pull cooler, cleaner air into the engine and keep out hot, power-robbing air. The 42249 will add an additional 20hp to your L5P and gain a total of 81 hp when combined with the Derringer inline tuner. Not only will it increase horsepower, your L5P will see less regens, and run cooler when hauling heavy loads.
The Banks Ram-Air system uses a molded, streamlined filter housing to maximize the space available for airflow. The Banks 42249 housing has a larger inlet and ballistic-shaped nose, which allows air to move more freely into the engine to give your Duramax more power than the factory air filter housing. This system includes an oiled air filter that requires less service and fewer cleanings versus a dry filter system.
- Ram-Air Cold-Air Intake System w/ Oiled or Dry Filter
- New oversized filter element, largest in its class
- Enclosed housing
- Decreases frequency between regens
- Extends service life and requires fewer cleanings
- 5-year Limited Warranty (Filter: Lifetime Limited Warranty)
- Oiled Air Filter Element
- Made In The USA
Please note that actual products may differ from images shown on our website. While we strive for accuracy in product listings, manufacturers may make changes to design, contents, color, or packaging without notice. Product images are for illustrative purposes only and may not represent the exact item you receive.
By purchasing, you acknowledge and accept that variations may occur and release OCDiesel from any liability related to product appearance differences.
Order Processing Time:
Orders are typically processed within 24-48 hours after the order has been placed.
Custom or special order items may take longer to process, typically 3-5 business days depending on the product and customization required.
Shipping Methods:
Standard Shipping (3-7 business days - location dependent)
Express Shipping (1-2 business days- location dependent)
Packaging:
All parts are securely packaged to better prevent any damage during transit. Fragile or high-value parts will be packaged with additional protective materials, such as bubble wrap or foam padding.
Shipping Rates:
Shipping rates vary based on the size, weight, and destination of the package. You can view the estimated shipping costs for your order during the checkout process before placing your order.
Order Tracking:
Once your order has been shipped, you will receive an email with the tracking number and carrier information. You can also track your order status by logging into your OCDiesel account.
USA Shipping:
We ship to the USA! (Except California) Please note that USA shipping rates and delivery times may vary based on destination. Customers are responsible for any customs fees, import taxes, or additional charges that may apply.
Not all products are stocked in-house. To ensure you receive your desired items promptly, please check for availability before placing your order. Some products may be backordered due to high demand or supply chain constraints, which could result in longer delivery times.
We strive to keep our inventory updated regularly, but availability & pricing can change quickly without notice. For the most accurate information & pricing, contact the OCDiesel customer service team using either this link, or the chat bubble on the bottom right of this page.
Most items are eligible for return within 30 days of shipping, provided they are unused, in original manufacturer packaging, and in resalable condition.
All returns & cancellations are subject to restocking and cancellation fees.
On products with status "Contact for availability" please contact us before ordering to confirm availability. Orders placed without prior availability confirmation are subject to current lead times and our cancellation/restocking policy.
Returns must include a Return Authorization Number (RA #) and be shipped with tracking. Return shipping costs are the responsibility of the customer.
Custom/special orders, electronics, and digital goods are final sale—no returns, refunds, or exchanges.
For full return instructions, fee details, and conditions, click here.
Q&A
No questions answered yet. Have a question about this product? Ask our team below.
