Generally, none of us can buy directly from Bosch. Even if you can get a kit with some parts it's not going to be all that much use to you if there's anything wrong with your pump. Only guys with special tools and test equipment can sort them out.
As a rule, I tell people what not to do. If I don't fix things myself I figure the average guy won't have any luck or will have problems doing it. Most of this comes from years of trying to do things myself that never seemed to work out. It's the main reason I won't do upholstery, AC, body work, painting, machine work, certain rebuilds, and do it your self plating kits. All of these things waste time and money for me. I find I'm much better off taking these jobs to a pro who can fix it right the first time.
What I do is all the things no one else is good at or wants to do. Everyone has their own certain skills and it's best to stsy within your comfort zone if you're trying to make a living doing whatever it is that you do.
