It is used on all Il-6 OHV engine up to M130..as I previously posted , they then went to 17mm...same tool , just a bigger pin hex head size due to so many 14mm ball heads getting rounded off w/14mm sizing...... the last thing you want to try and replace on these style engines is the ball sockets..they gaul the threads of the aluminum heads right up and then you are in big trouble .
Many try crowsfoot wrenches, but they are not wide enough to do the job correctly and the torque reading is inaccuate due to the geometric alignment of the tool.