Oh come now! We're not talking about some complex component like an injection or electronic part. We're talking about a spark plug. You know, no moving parts, you get the material and heat range right and when a high voltage is suddenly applied, a spark jumps across the electrodes.
Believe it or not, it will do this job in a German car, even if it is made in the USA, Mexico, Japan, etc.
When we get to the components that have moving parts or complexity, I'll buy in on the "German part for German car" theory.