I made a very short T30 bit for removing the cam cover on TSI motors, if you're just fixing a leak and not removing the motor mount to do a whole chain job. Its for the two bottom bolts close to the motor mount. I took a typical bit that was about 20 mm long and ground off both ends to make it about 12 mm to go on a 1/4 Snap On bit driver. Otherwise you're in there with a 10 mm box wrench on bolts that seem to be rounded off right from the factory, and at a tough angle.
Easy enough and dirt cheap to make one so no real market for it.
What I would like to do is affix a 12 mm triple square bit, about 1" long or maybe less, to a foot-long ratcheting combo wrench to get that one recessed bolt on TSI motor mounts on the timing chain side. What a pain, and a dedicated tool would save a lot of time and help make it a one man job. Right now I use a short ratcheting combo wrench and a bit with a couple o rings to hold it in place, and a buddy to put some pressure until it's loosened.
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