Shipping & Returns

Online orders will be shipped through UPS, based on the customers choice at checkout. We (do not) ship to P.O. boxes. We also use truck freight dependent upon the size of the parts being ordered. If your order requires truck freight we will contact you with shipping information.

Shipping delay can occur when the wrong address or zip code is submitted for the shipping address. If the shipping company can not deliver the package we will contact you via phone or email. During the holiday season shipping delivery may vary. Weather conditions also can delay shipments.

1. Contact Diesel Power at 406-543-7855.
2. If you have an account with Diesel Power, Please Login HERE
   • Under My Orders, click View Order on the order you want to setup a return on.
   • On the top right of your order details page, click Return and fill out the RMA Form and details.
   • When you have filled out the form, click Submit to send the information to us.
3. Request an RMA for the item you wish to return and verify the item is returnable.
4. Prepare your package in original packaging, with all parts, pieces and paperwork that were included when delivered.
5. Return your item via your preferred shipping provider.
6. NOTE: All returns are not prepaid.
7. Upon receipt of your return, Diesel Power will inspect your item and issue a refund according to Diesel Power’s refund & restocking fee policy. Please ask prior to returning your part if a restocking fee is likely to apply. Some parts have a required 15-35% restocking fee based on manufacturer policies which we will charge to you and deduct from your refund or in-store credit. Refunds will take up to 15 days to process.

We ship to Alaska.

We ship only to The US & Canada.

All cores are due within 30 days of purchase. You must follow the core return directions emailed to you upon purchase. Once your core return has been processed by the manufacturer, you will receive a full in-store credit immediately or full refund to the original credit card within 7-10 days for cores in usable condition, no exceptions.

Note: You are responsible for all core return shipping back to the manufacturer, along with insurance and tracking to verify the core arrived at the manufacturer. If a core is not rebuildable, we will adjust or deny your core accordingly. Core credits are NOT guaranteed. Diesel Power Parts and Machine LLC is not responsible for delayed credits, or lost/damaged cores.