i've searched this myself,maybe summer project if emission passable.If not,bye bye Benz.
Worldpac sells different types KYB,Boge,Bilstein comfort ,HD
while
Autohauz sells only one kind Boge Automatic 54$ each.no alternative listed.
they seems to know their stuff.

I wasnt impressed with the Bilstein Comfort I installed in the front iniitally.Only now 6 months later are they risen to the correct heights and less bouncy.Initially they made the car sl lower and more bouncy like a Buick.

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Tom 2010 C250 4-matic Sport (Canada)