I’ve replaced 2 head gaskets as long as I’ve owned Mercedes. My first was an 89 300e, leaked oil from rear. I used genuine parts and did it according to the manual and it lasted 6 years and 120,000 miles until I sold it. It’s probably still ok.

My 300te I changed the gasket just because I was doing the water pump. Same deal, genuine gaskets and no issues since.

From the head threads that I read it seems like hat whoever uses a victor reinz gasket ends up redoing the whole job in 6 months or less.

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Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2