Bosch makes lots of different direct-fit and universal (splice-in) sensors for lots of different makes.

If you use their vehicle parts finder, you'll find that the one you discussed here and used in the Ford is NOT correct for the MB. While it may splice in and seem to work fine, it won't be doing what MB designed and what Bosch built to meet that design. Your emissions may be off, your fuel economy may suffer, the performance may not be correct, you may reduce cat life, or some combination of all four.

The correct one for the 88 300TE is a 13925 (direct fit).
The universal one for the same car is a 15735.


http://www.boschautoparts.com/VehiclePartFinder/Pages/VehiclePartFinder.aspx