That is the correct legnth off the top of my head. I paid $350 or so for the balancing, a new support bearing, and new U-joint. Be sure to take it to a place that knows MB drive shafts. You may want to consider mailing it up here to http://www.driveshafts.com/pages/mercedes.html

I lucked out that they are local. They know their MB driveshafts. http://www.driveshafts.com/pages/mercedes_ujoint.html

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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