I deal with reputable parts suppliers, these suppliers have been providing watch makers with quality genuine and generic parts for years. Having used the genuine and generic parts for at least twenty years I would say they are indistinguishable from each other. All of the parts that I would be using in your Rolex, although they do not come with the Official Rolex packaging, are quality parts that match or exceed the quality of identical Rolex parts and, in most cases cost less. If your watch needs a new crown that will be a genuine Rolex as the crown symbol on the crown is a Rolex trademark.

There are a lot of after market replacement parts made for Rolex watches. Most of them are very well made and will work fine on you Rolex watch. Rolex does not like you using these parts, and will call your watch a counterfeit watch and may even refuse to work on it without replacing the Non-genuine parts. The only problem I have encountered with after market parts is sometimes bezels are not exactly the correct size. When the crystal is not held in properly, your watch may not be as water resistant as it should be. I do not get or fit generic bezels for Rolex watches. There are some generic sapphire crystals made to replace the original Rolex plastic crystals. As I have not had good results with them, I do not use them in replacement of Rolex plastic crystals.