It does not appear to be, no. But then it is really hard to see on that front right edge up underneath everything else. I attached photos here because I don't know how to describe the location accurately enough. Its basically the front right corner of the block, behind the alternator, directly behind the timing belt flange, next to the freeze plug...

Attached Files
PICT_20160519_093354.JPG (661.55 KB, 16 downloads)
PICT_20160519_093434.JPG (629.69 KB, 9 downloads)
PICT_20160519_093630.JPG (580.94 KB, 8 downloads)
'95 Montero SR 3.5L, Trail Gear Sliders, Rugged Ridge XHD Front Bumper, 33x12.5 Duratracs, much more in the works....