Returns Policy

You may return most new, unopened items within 30 days of delivery for a refund minus 20% restocking fee. We'll also pay the return shipping costs and restocking fee if the return is a result of our error(you received an incorrect or defective item, etc.). 

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.


Competition Use Only

High performance products are intended SOLELY for COMPETITION USE ONLY! Removing factory equipment such as Exhaust Gas
Recirculation (EGR), Catalytic Converter, or Diesel Particulate Filter (DPF), is against federal regulations set forth by the EPA. By purchasing or
installing any of our high performance products, you release Miller Performance Diesel of any liability and assume all responsibility for making sure your vehicle complies with all local, state, and federal emmissions regulations. By installing any of our high performance parts, you assume all risks, including but not limited to, loss of vehicle warranty, fines and penalites. You will in no way hold Miller Performance Diesel liable for any of your actions and assume all liability.