There is no special name for them. Mercedes simply calls them a "clip". The part number is 113-988-01-78, and you can still go to your local dealership to buy them, as they're still readily available. A total of 12 are required. Simply take the part number to your dealership, and ask them to order 12 of that part number. Alternatively, you can google the part number and several places that sell them in the U.S. will come up in the results. However, while shopping do keep a watch on the price. (Far too many places will overcharge for them). They retail for $2.00 each and wholesale for $1.60 each. Essentially, if you're being charged more than $2.00 per clip, less shipping and tax, then look elsewhere.
