5.9 Magnum Air-Box Confusion
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Veteran
Joined: Jun 2014
Posts: 412
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5.9 Magnum Air-Box Confusion
Hey Fellas,
I'm having a bit of an issue replacing the airbox on my 01 1500 Off Road. I pulled up the parts manual and found that for my 5.9 magnum, the part number for the airbox body(lower section) is 04897529aa, and the part number for the upper section(cover) is 05018218aa.
This issue is with where the hoses attach to the box.
As you can see, there is a nipple on the passenger side on my current airbox and no nipple on the driver rear side. On the driver's side, the pcv valve hose goes into the manifold, and not into the airbox on my truck.
Crankcase vent hose on passenger side
When looking at the parts manual, the airbox shown in the diagram has a nipple on the driver rear, as well as another hose attaching just above the throttle body.
In looking on ebay, and the limited places that sell airboxes for these old trucks, none seem to be like mine. I don't know where to find a replacement at this point, but this one is all cracked and the PO decided to just duct tape it which i don't like.
Any ideas boys?
I'm having a bit of an issue replacing the airbox on my 01 1500 Off Road. I pulled up the parts manual and found that for my 5.9 magnum, the part number for the airbox body(lower section) is 04897529aa, and the part number for the upper section(cover) is 05018218aa.
This issue is with where the hoses attach to the box.
As you can see, there is a nipple on the passenger side on my current airbox and no nipple on the driver rear side. On the driver's side, the pcv valve hose goes into the manifold, and not into the airbox on my truck.
Crankcase vent hose on passenger side
When looking at the parts manual, the airbox shown in the diagram has a nipple on the driver rear, as well as another hose attaching just above the throttle body.
In looking on ebay, and the limited places that sell airboxes for these old trucks, none seem to be like mine. I don't know where to find a replacement at this point, but this one is all cracked and the PO decided to just duct tape it which i don't like.
Any ideas boys?
Administrator
Joined: Apr 2010
Posts: 87,453
Likes: 4,218
From: Clayton MI
Things moved around on the air box over the years. PCV valve switched sides..... The difference *might* just be different hoses...... I think the new trucks had a hose that went from the passenger side valve cover, up over and behind the air box, to the nipple.
The nipple on the passenger side, right above where it mounts to the throttle body, looks to be an intake hose for the air injection pump. Does your truck even HAVE one?? I think those were only one the HD 360, and I have never seen one..... Of course, I haven't seen one with the nipple like yours has either.
Might just get one, and then run some 'custom' hoses.....
The nipple on the passenger side, right above where it mounts to the throttle body, looks to be an intake hose for the air injection pump. Does your truck even HAVE one?? I think those were only one the HD 360, and I have never seen one..... Of course, I haven't seen one with the nipple like yours has either.
Might just get one, and then run some 'custom' hoses.....
Professional
Joined: Oct 2013
Posts: 137
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I have the same truck and air box you do...
If you can't find the exact same part that you already have, I'd do what HeyYou suggested. You should be able to just cap off the extra nipple on the driver's side with a short hose and a plug, and then just get a piece of heater or vacuum hose to reach from the passenger side valve cover to the "relocated" nipple on the air box. That should work just like the stock setup.