While changing the water pump and thermostat, I noticed that whoever owned the car before me, was driving around without the bolt. LOL

I didn't notice anything different while driving it myself.

Can't find the part number for that bolt anywhere.

Anyone have any ideas?

 

That's called the torque arm. Remove it and look at the bushing in it as it probably needs to be replaced too. Mine was cracked at only 50k miles. I used a Power flex one in mine, but you'll need a hydraulic press to change it

 

the bolt itself is a VW part- grab it from a VW dealer.


P/N N 102 902 06
Hex collared bolt
Thread- M10X70