Update on my situation
I contacted the shop earlier today. They did find out that it was a termo for a 190 DIESEL they sent to me!!! They told me a change will be fine so tomorrow I'm gonna mail it to them...
Ain't it funny...
Stephen: Sorry, I should've payed more attention to you advice. But since the termostats were identical except for the degrees I really thought I had the right part.
'87 MBenz 190E 2,3 8vlv