That is probably a Myna pump. They use the M pump from a Euro Spec 617 and add 7 mm elements and their own tweaks. I think the price is something like $2000 plus shipping...and you have to speak Finnish.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine