I want to replace the delivery valve seals in my '87 190D 2.5T, to see if it will help my surging idle situation. Can anyone recommend a "best" source for the correct splined wrench. I see that Performance Products has the socket for $40. I don't mind buying good tools, but this is one I'll probably only use once. Any recommmendations, or anybody want to sell a used wrench?

SteveM.

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'93 190E/D 2.5 Turbodiesel 5-speed (daily driver)
'87 190D 2.5 Turbo rustbucket - parts car
'84 Dodge Rampage diesel - Land Speed Record Holder
'13 Ram 2500 Diesel
'05 Toyota 4Runner