Can I buy parts directly from a 4S store?

[AsherFitz]

You can buy parts directly from a 4S store, and it's best to purchase from a 4S store for better reliability. 4S stores allow bringing your own parts: Most 4S stores allow car owners to bring their own parts for maintenance and repairs. During the vehicle warranty period, some parts can be replaced for free by the manufacturer. Therefore, the manufacturer states that during vehicle maintenance, all parts must be original manufacturer parts, including engine oil. 4S stores will provide explanations: 4S stores will explain the pros and cons to the car owner and ask them to sign a maintenance authorization form, disclaimer, and other related agreements. Generally, the authorization form will state that if there are quality issues with the part itself or problems caused by the part, the 4S store will not provide warranty services, thus avoiding unnecessary disputes in the future.