One of the questions often asked about car parts is that Parts exchange can get confounded. They are possibly recorded as exchangeable when they are straight up bolt-in trades, which for a shop is great, however for a home repairman, or a task isn’t basic. Are car parts interchangeable? The answer is parts exchange can be messy. They are possibly considered exchangeable when they are straight up bolt-in trades, which is okay for a shop, however, for a “home mechanic” or a complicated task.