Thoroughbred Diesel does not manufacture most of the products we sell and does not assume responsibility for warranty coverage on those items. Warranty obligations for such products are the sole responsibility of the original manufacturer. Warranty information for each product is provided on the product page when available; if it is not listed, customers must refer directly to the manufacturer’s website for complete terms and instructions. Thoroughbred Diesel only provides direct warranty coverage for products sold under the Thoroughbred Diesel brand name, and the warranty terms for those products vary by item. Thoroughbred Diesel offers a 30-day return policy for unused, uninstalled parts. Once a product has been installed, any defect, failure, or performance issue must be handled exclusively through the manufacturer’s warranty process. While Thoroughbred Diesel’s warranty department is available to assist customers in initiating or navigating a warranty claim, all final decisions regarding coverage, repairs, or replacements are made solely by the manufacturer. Thoroughbred Diesel assumes no liability for any denied claims, incidental costs, or damages resulting from a product failure.