From the pictures I've seen it appears to be the whole pump assembly with the flow control valve attached. Not sure what else is required for a complete assembly, but it looks like it would be ready to drop in. If you copy and paste those numbers into eBay, it looks like there's actually a few vendors, the Best prices on the new part appears to be $570 from Germany
Here is the video that describes how the pump fails and destroys the system, and shows what the bypass does...