Fits the following 108, 111, 113, 114, 115, 116, 107, 123, and 126 chassis with four bolt mount viscous and fixed fans . NEW IN 2016! Now works on fans without viscous clutch that use 13mm head bolts like in some 240Ds. I developed this special tool out of sheer frustration of years trying to remove rounded off and frozen 10 mm head bolts that mount the viscous clutch to the water pump. These special 10mm bolts (4) are often abused and when you try to get them off particularly with open end 10mm wrench you can round the head and then you've got some real problems.
This wrench starts out as a combination 10mm that I straighten out and weld another long 13 mm on the other end to creat an extended (very long) handle. I cut the open ends of both wrenches off and then weld them together to create this special wrench. The 10mm box end has been specially ground to fit on the head of these special fan bolts. What is particularly nice is having the extra torque of the long handle. I also put a TWIST in the wrench to make it feel better in your hand when you are applying torque. Most 10mm combination wrenches are real short and if they are off-set at all with an angle they are very hard to get on to these bolts. If you have been as frustrated as I have with these bolts then you will appreciate this solution. If changing a water pump or viscous fan is in your future, I highly recommend this tool. It will save a lot of frustration and some busted up knuckles. The 13 mm box on the other end has also been straighten (but has not been ground. You can use this end to get on the bolts to the fixed fan on some older models or use it anywhere on your Benz when you need an extra long reach or extra torque.
Here you can see the advantage of our special long handled thin head 10 mm wrench. The long handle allows eash rearch to the bolts holding the fan clutch to the front of the water pump and the thin box head actually allows you to get on the bolts and turn them ( the clearance is VERY tight).