Return Policy

A Return Merchandise Authorization (RMA) number is required, and must be written on the outside shipping carton. Complete this form to obtain a Return Authorization Number and return shipment instructions.
  • Returns must be packaged securely in an outer carton
  • Do not write on the product packaging itself. Write only on the outer shipping carton.
  • Packages received without a Return Authorization Number written clearly on the outer carton will be refused credit and the package returned to sender.
  • Returnable items must be received by TMS Diesel within 30 days of the product being received by you the customer. (determined by UPS or USPS Tracking info)
  • Returned product must be in new, resalable condition, with all original boxes, packaging, parts, cables, manuals, etc.
  • Upon receipt, all returns will be inspected, and, at our discretion, credit may be refused or a restocking fee of 10% may be assessed.
  • Original shipping charges will not be refunded.
  • Gift Cards are not returnable or refundable for cash.
  • Customer is responsible for shipping costs incurred to return products.

Some Circumstances in which credit will not be issued but not limited to:

  • Product has been installed and/or used
  • Product has been damaged from an attempt to be installed and/or used
  • Product is shipped back with out original box, manual and/or parts
  • Seal on electrical parts is broken
  • Product serial number does not match that of which was original shipped to buyer
  • Product is deemed not resalable by TMS Diesel Performance due to customers own actions in dealing with the product

All Edge Products, and PPE product returns will not be accepted without an RMA# from the manufacturer. Once you have received the manufacturer’s RMA number you still MUST get an RMA number from Xtreme Diesel Performance. Once the product is returned and inspected you will be issued a Store Credit or Exchange.

Shipments refused by you the customer and returned back to TMS Diesel will carry an automatic 10% restocking fee deducted from the total credit owed.

Product Availability

TMS Diesel prides itself on having the industries largest selection of diesel performance products and apparel In-Stock everyday. However, back orders, production issues and delays in transit do occur.

If you would like to know a products exact availability please contact a sales representative at 1-603-529-5503.