Silverstar replacement lamps are made by Osram Sylvania. Most versions are manufactured in Germany. Check the bottom of the lamp, and you can find the country of origin. To be street legal, they must meet certain standards. There is NO difference between Osram, and Sylvania. Same company. These aftermarket lamps will NOT last as long as OEM. This is marketing. They are brighter. FYI, the correct terminology is the word "lamps" in the automotive world. "Bulbs" are planted in the ground to grow flowers.