Stock airbox
 

Anyone know what size bolts screw into the stock airbox? bought the whole setup here on the org but didn't get the bolts needed to connect everything.

GOT tap or die?

10 mm bolts for the entire intake.

10 mm is the head size

Just about every fitting in the Maxima uses a M9 bolt.

For confirmation, just unscrew something else, (like a headlight screw, the radiator fitment screw, or the hood-release switch bolt), and try it in the airbox threads. Then take it to the hardware store and buy a handful to match. Done.

The actual names of those parts elude me, but you probably get my point.

10 mm bolts, your life is supported by a 10mm bolt.... ans 12mm and 14mm......