How do I return or cancel an item or order?

Street Diesel Performance reserves the right to change its payment procedures at any time without prior notice to you.
  • Returns must be made within 30 days of purchase.
  • Returns: 25% restocking fee on returnable items that arrive back in the same condition that they left our facility. To CANCEL a not shipped order, email or call 860-250-6082
  • Cancelled Orders(orders that have not been shipped yet): 10% fee to cover credit card processing, refund, and internal time involved in the cancellation process
  • All merchandise must be returned in original packaging with out any missing parts.
  • Electronics, special ordered, and installed items NOT returnable.
Please contact us for return instructions. 860-250-6082 to get a RMA# for your return, returns MUST include a copy of original invoice and a note explaining the reason for the return. RMA number must be on outside of box or they will be refused when they arrive back here


Core credit returns will be accepted within 30 days of original purchase. After 30 day core credit refunds will be at the discretion of SDP. To return your product core for credit, call Lisa at (860)377-9341. SDP will email or give you an RMA number and detailed return instructions. Please wait for shipment instructions before shipping any cores, many cores will be sent directly to the manufacturer. SDP recommends using a carrier that provides package tracking to ensure your product gets back safely and quickly. You will not be reimbursed for shipping costs incurred in shipping the core. The credit card used for the purchase of the product giving rise to the core return will be credited with the core's original invoiced value after inspection. Please drain all fluids, if any, from the core( packages that leak or damage other packages will be discarded by UPS/FEDEX and no core credit will be issued. The core returned must be a like-for-like make, model, type and part number. Cores will not be accepted from a salvage or junkyard. Cores that have been disassembled or have missing and/or damaged major components will not receive core credit.