Purchase replacement parts for trucks with a Ford 7.3L diesel engine on sites such as eBay, Craigslist, Thoroughbred Diesel and Riffraff Diesel Performance. Each site contains different organization structures for parts, with some differentiating between different vehicle years and others listing all parts in the same category.
One of the most important aspects of buying an automotive part online, such as one for a truck with a Ford 7.3L diesel engine, is to ensure that the part is compatible with that specific model of vehicle. For example, if a buyer is looking for a part for a 2002 Ford Excursion, she needs to make sure that the parts work for that model, to avoid any safety hazards or malfunctions. This is done by comparing the vehicle identification number on the truck to the list of compatible parts in the truck's owner's manual or on an online resource. All parts contain serial numbers that aid in this identification process.
If the buyer is shopping for used parts, she also needs to find out how much the part was used to determine its reliability. If the seller doesn't have a repair history for the part, the buyer needs to exercise caution as there is no way to tell if the part is reliable without using it.