Center top of the valve cover is tube, for an L shaped, fat rubber vacuum hose that goes to the throttle body. No reference that I can find. Most of the time, because that stubby hose can't go anywhere and fits as snug as the vacuum tubing, I've not seen hose clamps.
02 525ita. Wife's, aka grocery getter
02 530i. New to the fleet, 3 pedals.
03 QX4, AKA the Datsun. Finally got the 4WD vacationmoble to stop smoking.
07 Xterra. Still on the DL, a purchase from hell.
