I have got to go with Benzmac on this one. That was the problem I had with my 500SEL. Take it from me, do not buy cheap crap to replace the fuel system components with. I repeated that montra as I was replacing my third fuel pump.
1985 500SEL (260,000 miles) SOLD!
1974 280 SOLD!
1994 Volvo 850 Turbo Wagon (Yuppie Ice Sled)
"I know I have a Benz and they know it too." If you start bragging about it or shoving in people's face, you then become a Wally; especially to the girls.