source = 'to obtain (as a part) from elsewhere'

[James Harbeck]

>So I'll be sourcing hard tires for it.

A very familiar usage to me. I don't think I've been hearing it all
my life, but it's certainly unexceptional to me now up here in
Canada. It isn't always used for parts; anything that one finds a
supplier for, and then gets, can have this verb used on it in the
variety of usage I'm used to.

James Harbeck.

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