Lot's of good information here.

http://en.wikipedia.org/wiki/Mercedes-Benz_W124

Part's are easily obtained from internet sources. Reasonably priced imo.

Be sure to check out the engine links while you are in Wiki.

__________________
1993 W124 300D 2.5L Turbo, OM602.962
2000 Chevrolet Cavalier, 2.4L DOHC
2002 Ford Explorer, 4.0L SOHC
2005 Toyota Prius, 1.5L

http://www.fuelly.com/sig-us/40601.png