Mercedes ECU Up for sale is a Working, in excellent condition Mercedes Engine Control Unit. Mercedes Part number--

014 545 18 32    0 280 002 534 

. This unit is out of a 400e (w124 chassis). This should also work with w140 400sel models with the same v8 engine, however it is the buyers responsibility to find this out, as I don't know that for sure. Your best bet is to check the part number of the ECU you are trying to replace with this items part number to make sure they are the same. These units now have to be special ordered from most dealers new for big $$ (often times several thousand bucks!), and finding a good one second hand is getting to be a very hard chore.