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Most of the parts on your car are just GM parts. Auto manufacturers don't design a new pump/bearing/condenser/etc... for every make and model of their vehicles, they take one off of the shelf. When it breaks you can find a replacement because there are dozens or hundreds of cars that used the exact same part and supplying one supplies them all. Even when the manufacturer stops making that part (because the last car they used it in is 15+ years old) there's a healthy market of people making knockoffs just for people like you. I gave plenty of money to companies like Dorman to keep my old 90s truck alive.

With something like those early model Teslas there is a lot of custom one-off parts that are near impossible to find. The problem is a lot harder.




GM and the Big Three in general have a huge aftermarket and good parts availability likely due to the prevalence of the modding/tuning culture at the peak of the "car era" (1950s-70s). In fact you can still buy all the parts for the running gear of the stereotypical American car (V8, 3-speed auto/4-speed manual, RWD, IFS) entirely from the aftermarket, and they'll perform just as well if not better than the original parts.

Auto manufacturers don't design a new pump/bearing/condenser/etc... for every make and model of their vehicles, they take one off of the shelf.

...unless it's a German car. Or so the stories go...


> ...unless it's a German car. Or so the stories go...

VW has extremely decent availability for spare parts, speaking from experience here. That, and I am not joking here, even extends to sausages - try ordering part # 199 398 500 A ;)


> With something like those early model Teslas there is a lot of custom one-off parts that are near impossible to find.

I guess the question becomes why did Tesla have so many one-off parts? Is it all attributable to being electric rather than gas?


> Is it all attributable to being electric rather than gas?

Partly yes, but Tesla didn't have a shelf to go grab parts from in the first place, either. They didn't come out of an existing auto company with an existing parts inventory after all. And for the body & frame they also started with a Lotus which is itself not a mass-market car.

You'll probably find _some_ non-custom common parts in a Roadster, like maybe the A/C system. But the drive train makes up a pretty big chunk of the parts in a car.




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