OK, so I’ve pretty much decided that my Bosch 044 pump is a counterfeit – a very good counterfeit. I did a fairly thorough websearch trying to find out as much as I could about these counterfeit pumps but most photos/comparisons are a few years old. I purchased this pump within the last year and I have to be honest, it’s a really good imposter!
Here are a few photos I pulled from the web:
And here are a few photos of my pump:
So there you have it – I suspect the real reason my fuel system has been failing HP pumps is because I’ve been getting bad parts! Makes me feel a little better about my initial design but at this point I’m committed to revamping the system entirely and eliminating the Bosch 044 from my setup.
**Update: So I just happened to have gotten my grubby little paws onto a LEGIT Bosch 044 fuel pump! With the real deal in my hands a comparison between it and my knock-off pumps is much easier – now that I can see what a real pump looks like it’s really obvious where the knock-off falls flat.