Thought this might help someone although it does not seem to include info for the w126. The table has part numbers and pics of injector breakdown are informative even though this is a German site.

http://home.arcor.de/joerg_kerzendorf/martin/einsprit.htm

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1982 300SD Light Blue
2002 Honda Accord SE
1974 Toro Wheel Horse Tractor
2000 Toyota Tundra Pickup