Perc
Very Odd Looking Vehicular Object
Who makes the OEM part? GM Themselves or someone like Delphi? That's a good part to be... good. Land Rover OEM parts are often Delphi but I won't try and argue that the build quality of those isn't shit most of the time.
I honestly don't know, but I would hazard a guess it's ZF since the car was made in Germany.
I'm probably not wrong when I'm guessing that my Octavia had ZF front drop links. I owned that car from new and they started clunking at 45000km or thereabouts. Meanwhile, I have 175000km on an Insignia that weighs half a ton more and all the chassis bits are still factory.
We sell lots of "ZF Aftermarket" chassis parts, branded Lemförder, and some of them have grinding marks where someone removed a vehicle manufacturers' logo before putting it into the aftermarket packaging. You mostly see it on expensive cast aluminium control arms for European cars.