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.
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.