Delivery valve seals $20 bucks total. Maybe I'm exaggerating a little it's more around $30.

It's really hard to get them online u gotta just goto any machanic shop that has the "Bosch Service Center" banner at it or the Mercedes Dealership and they order them there. It's not something they will usually have in stock but they will get it to u within a week or so.


Go read the "delivery valves of a source of knocking" thread. (Huge thread should be a first or second page) Just skim thru the first thru pages I believe a few members post the part numbers which u will need.

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