How to change the engine fuel filter on Mercedes-Benz. This is done on my E-Class W212 Diesel engine (OM651) but the procedure is mostly the same for other models.
If you like to do it the recommend way from MB you should use a plier special made for the click clamps part-nr (171589003700) but I don’t had any at home and the normal plier with a flat screwdriver worked flawlessly.
And you should also order new click clamps, they should not be reused again, and should not be replaced with any other type of connector.
You could also buy a new filter without the heating element and reuse it from the old filter. Is a cost saver but taking more time to do.
Hose clamp plier – https://amzn.to/3bgTRv1
Diesel filter – https://amzn.to/3nKpIJx
Clamp 13-14.5 mm – https://amzn.to/2QQZWqP
Clamp 14.5-15.5 mm – https://amzn.to/2RlZeBM