Pressure control valve problem.

[Mike131]

Hi I have a w203 2005 facelift 220cdi with a Fuel pressure control valve problem I have removed the valve and the number on the part is not the same as on the WIS EPC part number
the part I removed is 0 928 400 604 but the EPC number given is A 646 074 00 84
I would be gratful for any input

 

[Uncle Benz]

The first number looks like a Bosch part number to me rather than MB part number

 

[Mike131]

Yes your right i put in the Mercedes part number I should have put in the corresponding Bosch number which turns out to be 0 928 400 508 but the part number on the unit I removed was 0 928 400 604 when I try to source the part number on the valve I removed I get the 0 928 400 508 number 9 times out of ten so I am hoping someone has more of a clue about it then me any help would be good.