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Shipping and Return Policy


If the items in your order which qualify for 'Free Shipping' total $100 or more, your order ships FREE! Applies to items shipped UPS/Fedex or USPS.  Freight shipments do not apply.  **USA Lower 48 States Only**  Orders placed after 2pm MST will not ship until the next business day.  If you need an exception or special handling please call 801-927-4600 for assistance.

Specially marked products may have oversized package fee's associated with them due to their large size and/or weight.

Orders going to Alaska, Hawaii or International may have shipping quotes that vary greatly.  We are happy to get more accurate shipping for you through  DHL, UPS or USPS and check for flat rate options to save our customers extra money.  We recommend DHL or USPS for international orders  to avoid brokerage fees.

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.  Some products have restrictions based on local emissions laws.  We cannot ship non CARB approved products to states that have CARB emissions standards. 

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.  If an order must ship from multiple warehouses or vendors expedited shipping may not calculate correctly.  All shipping is considered a quote and may need to be adjusted to accommodate weights or size.


Returns Policy

We hope to get all orders right the first time.  Sometimes that does not happen, or a customer changes their mind.

  • You may return most new, unopened items within 30 days of delivery for a full refund less shipping and handling.
  • Returns are subject to a 20% restock fee. OPENED or INSTALLED product may not be eligible for return.
  • Some parts are custom built and are not eligible for return or exchange.
  • Exchanging new parts for another item often reduces restocking fees.
  • For full core credit: Cores must be returned in same box with core return form within 30 days from order date.
  • Warranty claims are at the sole discretion of manufacturer. DAP is happy to assist customers with their claims. Customer agrees that by installing any product purchased from DAP, customer will abide by manufacturer decision on warranty claims and hold DAP harmless.
  • Improper installation, fuel contamination, modification, disassembly, and unapproved application void warranty.
  • Please send all returns and cores insured with tracking and keep for your records.

Refunds are usually processed within 3-7 business days after the package arrives at our location.  Your bank or credit card may take 5 to 10 business days for your bank to process our refund request.

Core Return Policy


  1. Cores MUST have Bosch bodies.
  3. Cores must be returned within 30 days from the order date to be eligible for full credit.
  4. Cores received AFTER 30 days will only be eligible for HALF credit.
  5. Shipping address: ATTN: CORES 3072 North 750 East Layton, UT 84041 
  6. Include a completed copy of this form and a copy of your invoice with the core return. Any cores returned without this form and related paperwork may be assessed as a penalty.
  7. Cores must be drained of all fluids, reasonably clean, bagged, and securely packaged for shipping.
  8. Insure and Ship the package to Diesel Auto Power, freight prepaid. Our receiving department is unable to receive freight collect or C.O.D. shipments.
  9. Cores are subject to inspection upon arrival. All cores must be returned in rebuildable condition as determined by the manufacturer to receive full credit. Cores may be refused or receive reduced value if there is physical damage, fuel contamination, seized components, are disassembled, etc. Refunds are issued in the same form as the payment was received to avoid processing fees.
  10. Once cores are returned and processed, they become the property of Diesel Auto Power. In the event that the customer requires cores to be returned, a re-buildable core will be withdrawn from our core bank. It may or may not be the original core that is returned.

Note: International shipments sent through carriers that charge brokerage fees will be deducted from the customer's
core refund. (Approximately $35.00)

For more information or if you have any questions please email or call  801-927-4600