Yes, both have a kit #. If you look on Army's thread on rebuilding the "M" style "Euro-Pump), i.e., the 2 dog eared / 2 bolt style, I think he references the kit #. If not, when I get a chance I will look for one in my unorganized parts bin. It's a MB kit and I believe there's only a dealer kit / dealer part # for the 2 dog earned style one.

As for the 3 dog eared style / 3 bolt flange type, you can buy Bosch IF you can find them. I buy every single one I can find. They are NLA and what you will find is NOS. You can buy an aftermarket kit although I suspect its overall quality.

The 2 styles of pumps have different sized shafts, so the O-rings are different. I think one is 7mm and other 6mm, but I could be wrong on that. Just going from memory ...