x2

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2009 E320 Bluetec 117,000
1995 E300D 306,000 Sold
1996 Ford Taurus LX 130,000 Sold
1985 300TD Still 225,000 Sold
2016 Ford Fusion 24,900

The bolt is just a standard metric cap screw. I forget which threads, but you could get one from boltdepot.com. Get a high grade one and use anti-seize -- I think the OEM ones have some sort of fancy coating...

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RenaissanceMan Labs: where the future is being made today.

Garage:

2017 Chevy Colorado Diesel (nanny state emissions)
2005 Volvo S40 T5 AWD, 77k
1987 Mercedes-Benz 300D turbodiesel, 4 sp auto, 156k - 28.7 mpg
1996 Tracker 4x4, 2 door, 16v, 3 sp auto. 113k - 28.6 mpg

WARNING: this post may contain dangerous free thinking.

The bolt is M10 1.5 45mm long. I could not fit any 8mm hex wrench in there myself they would not fit needed about 1/2" cut off to fit.

Interesting. My w124 with the 603 was tough, but I got a hex key in there.

__________________
RenaissanceMan Labs: where the future is being made today.

Garage:

2017 Chevy Colorado Diesel (nanny state emissions)
2005 Volvo S40 T5 AWD, 77k
1987 Mercedes-Benz 300D turbodiesel, 4 sp auto, 156k - 28.7 mpg
1996 Tracker 4x4, 2 door, 16v, 3 sp auto. 113k - 28.6 mpg

WARNING: this post may contain dangerous free thinking.

I have a made in china allen wrench set, titan branded I think, the 8mm key fits the bolt and clears the radiator fins too (best use a pizza box to save those fins)

I use the key to just crack it loose - my pulley holder is a water pump pliers which I use to hold the water pump pulley with belt on it.

After its loose I use the shorty socket to remove the bolt. You can buy this bolt from ace hardware if you want. You might need to polish off the sides of the new bolt head if its not a MB purchase.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

treetops,

I got mine at Fastnal they are M10 1.5 45mm long. The ones I got were 8mm hex head. You can probably buy different heads.