Originally Posted by
ala_xfire
I don't know about others experiences, but I bought a cheap SLK pump and it would not work in my roadster.
The pump came from eBay, so I don't know if it was any good or not.
And yes, it does have extra vacuum ports.
The 170 800 08 48 pump is the SLK pump so it should have worked, cheap or not, I guess it was broken somehow.