Magnetic Engine Block Heater
Ben


Perhaps it is different at your place but our W204 has a "block heater" in a coolant hose because the engine block does not have a suitable hole for the heater element. This is still a lot more efficient than those heaters that are attached outside of the engine.
Why don't you call MBUSA and ask what's available in their parts database?
I'm surprised that there isn't a removable plug in the side of the block considering that these cars are sold worldwide.
Back in my diesel days, the block heater was no cost equipment and all you had to buy was the power cord for a few bucks. I used it a lot since that car was outside all the time.

. I just saw the part online and thought that would be way too convenient if that would actually work.



