I have always gotten the factory quality replacement parts from Europarts SD. In my experience, they do not sell cheap Chinese knock offs. heya re a family run business and have limited hours in the current health crisis. A little patience will go a long way, if you don';t get an immediate response.
Do consider that they are continuing to be open daily M-F during the current crisis, even on a somewhat shortened schedule.
After a decade of relying upon them for factory quality parts, there has been only one situation that they could not give me what I needed.
This is directly referring to a set of 06 Freightliner headlight assemblies that appear to not be available other than MB for $400 each or to some chinese knock off for half the price.
I am still debating which way to go.
A shout out to the Sprinter Pit Stop in San Diego for fixing a couple headlight bulbs that went out for a second time in the last three months.
If they go out again, I will need to replace the assemblies, unless someone knows of another cure. To be specific, the drivers side daylight bulbs and the drivers side nighttime headlight bulbs have been the problem. The brights are fine.