While trying to diagnose a horn issue, I noticed that my stock airbox doesn't seem to be held in place by anything.

Are there supposed to be brackets or bolts securing it? I've included these pictures of what I assume are mounting points:

 

Ur missing the L btacket on the left side and on the right side it bolts to the cross beam.

 

Which pic corresponds to left and which to right? I still suck at browsing Honda parts catalogs; can you help me out with a part number or name? Thanks!

 

Search for an intake install and you'll see what he mean's.

 

I searched around on this site and
unfortunately most of the threads have after pics or start after the stock box is removed.

 

You are missing two small silver L brackets on the passenger side.

On the rear passenger side mount, you are also missing the rubber grommet and steel insert.

The 3rd mounting point is on the drivers side of the airbox, a bolt goes into the frame/cross beam itself. no bracket.

 

Clicky here...

Parts #1 and #2

 

Thanks! I ordered up what I think are those brackets and all the bolts, nuts, and spacers I need to patch things up.

 

I finally did it today. To make this thread a little more useful, I guess I'll describe it a bit more, in case anyone needs to do it. The best way to describe it is in the form of removing the stock airbox.

There's a few things that you need to disconnect before you can take out the airbox. They're highlighted in this crappy photo I found online. It was a hot mess outside and I was sweating bullets, so I couldn't handle my cell phone



The first set of things you want to unhook are the metal clips securing the top of the airbox. These are highlighted in green. There are a total of 6: 3 in the back, 2 in the front, and one on the passenger side of the airbox. I'd check to see if they're loose. If so, pop them off and set them aside. They go right back on very easily. Take the top half of the airbox off.

Then, there are some accessories that are attached to the body of the bottom half of the airbox. These are highlighted in red. There's one hose running along the back that's clipped in 3 places to the airbox. There's one brass bolt holding what I think is a vacuum block, also in the back. Finally, one big hose is clipped on the driver's side of the box. After you unclip and unscrew these, you have the best view to take out the airbox mounts, which are highlighted in green.

In my case, of course, I used this phase to put my mounts back into place. Each mount consists of a rubber spacer, a metal collar that fits inside the spacer, and a long bolt. The 2 passenger side mounts bolt to an extending bracket that bolts to the body. The driver side mount bolts directly into a crossmember. You can't extract the passenger side mount brackets without the airbox out of the way.
Anyways, the long bolts going through the rubber spacers are 10 mm. Your best chance of reaching them is with a 6" extension. All long bolts unbolt upwards.

Once these three are unbolted, you can take the bottom half of the airbox out from under the intake pipe. Be careful not to snag anything. You'll want to get the bottom tilted 45 degrees upward to clear the crossmember it sits on, and then the radiator.

At this point, I suppose you'd want to swap to an aftermarket intake, which is what most people would want the airbox off for.
For completeness, you can remove the two passenger side mount brackets. These unbolt out to the driver side. There is no matching nut; instead the nut is integrated into the body. Unbolting he front bracket can run into some clearance issues with the fan. I had a 3" extension that let me fit my wrench into some empty space. You might have to unbolt the top 2 bolts of the fan to get room.