They don’t tho The, not really. Very few of those parts are actually made by the automaker. They’re by Bosch, AC Delco, or any of the thousands of OEMs of brake pads, fuel injectors, and what have you. If actually try to buy a new exact OEM replacement for anything past about 10-15 years old, you probably aren’t. Instead you’ll be dealing with some 3rd tier anonymous vendor making clones.