However, I'm can't get ANY purchase on this damn bolt (circled) on the other side of that flange to be able to remove the EGR pipe. Does anyone have any idea what tool and what angle would best help here? I have tried socket-wrenches, spanners, off-set spanners, and none seem to work for me. Either they collide with the damn pipe and cannot grip the bolt, or I cannot apply any torque to the tool if it's somehow able to grip the bolt.