It`s been a month and no answer.
Here is a thread from Benz World, MB Part# A606-200-00-96
https://www.benzworld.org/threads/definitive-240d-block-heater-thread.1670349/

There are several good links to click on.

240D no block heater

Here is on what the guy went through.
THE Definitive Block Heater Coolant Plug Removal Thread

Kats and Zero Start make heater also. probably make them for MB.
Here is the Kats # KAT 11407 and Zero Start P/N: 9002034895 Zerostart


Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works