A RMA (Return Merchandise Authorization) number is required, and must be written on the outside shipping carton.

• 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.
• Returnable items must be received by Thompson Diesel Performance within 30 days of the product being received by you the customer. (determined by UPS Tracking info)
• Returned product must be in new, re-saleable 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 30% may be assessed.
• Original shipping cost and shipping insurance charges are non-refundable.
• Customer is responsible for shipping costs incurred to return products.
• Products can only be returned for a refund, store credit, or an exchange for the same item. Product cannot be exchanged for a different part number.

• Product has been installed and/or used
• Product has been damaged from an attempt to be installed and/or used
• Product is shipped back without 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 resell able by Thompson Diesel Performancec due to customers own actions in dealing with the product