Guides for parts inventory, teardown, and warehouse operations.

What automotive interchange actually solved

Pull an alternator from a wrecked truck and the interchange tells you every other vehicle it fits, before the part reaches a shelf. That lookup is not a database — it is three layers stacked on each other: a shared way to describe a vehicle, generations of curated fitment knowledge, and standards that let the data move between companies. Underneath all three sits the reason they could be funded at all — an old car has always been worth repairing. This guide takes the stack apart layer by layer, because the details decide what any other parts trade could realistically build.