I know these things have been discussed some but I wanted to apply the responses to my situation. I am looking to move up from my 300GE (M103) to a '95 G320 (M104). If the headgasket were to fail what is the typical cost of the repair? Is the wiring harness problem limited to W124 cars or could it affect a Gwagen, W140 or even an SL320? I am a little torn on what to do, the M103 is definately one of my favorite MB engines, a little light on oomph but solid. Do I dare trust the 104? I am very curious to know what the potential replacement of the gasket would cost.

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90 M-B 300GE 5sp
98 BMW 750iL
86 Porsche 944 Turbo

In a 124, the cost is about $1,000 or so I think.

I see them fail, but it is not THAT often.

Are you going to install a new engine or sell the G?

How much?

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Benzmac:
Donnie Drummonds
300E
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM
OWNER OF MB AUTOWERKS .COM

There is nothing wrong with either truck right now. I was just considering buying a newer model. The newer ones use the M104 where the one I currently have is a M103. Where there any concerns with the early 104s besides the headgasket. I just don't want to change vehicles and end up with one that is less reliable. Of course the newer one has quite a few more luxury items, not to mention 40 extra hp. I have not decided how much I am selling the '90 for, somewhere between $45-50k.

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90 M-B 300GE 5sp
98 BMW 750iL
86 Porsche 944 Turbo