Where to get OEM relays? (03525 50A)

[tchalikias]

So the problem with my 200's A/C acting wonky was a faulty relay in the engine bay. The offending part is a 12V-50A relay (03525) by Cartier. While I can find hundreds of these online used, I can't seem to be able to find the part new somewhere. Anyone know where I can get one?

 

[tchalikias]

To save anyone else the trouble, the relay in question is part number 7700810396 and can be found on the fusebox to the left of the battery (look for the purple box looking relay inside, it has four prongs). It controls the cooling fan at the front, and in my case, the faulty relay made the fan spin at only the lower speed, not the higher one required on a hot day for the A/C to function properly. Thus the A/C pump kept engaging and disengaging continuously and of course no cool air was released into the cabin. Also, no fault codes were saved in the ECU.