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Cabin air drain

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Old Dec 2, 2025 | 05:25 PM
  #1  
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Cabin air drain

Good day fellow Ford friends,

I was wondering if anyone would know the where abouts of the cabin air intake drain for my 2012 F350 diesel? My wife says there is a mold/mildew smell coming for the truck when I have the fan on. I started thinking that with the location of the cabin air intake at the bottom of the windshield and the pretty decent size gaps in the slotted intake cover, that I may have gotten a fair amount of pine needles and pollen down in the intake. That kind of accumulation over the past 13 years that there may be a blockage in the drain. Any information would be greatly appreciated. Especially pics or diagrams. Y'all have a great day!!!

Kevin
 
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Old Dec 3, 2025 | 02:01 AM
  #2  
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Originally Posted by Kproper
Good day fellow Ford friends,

I was wondering if anyone would know the where abouts of the cabin air intake drain for my 2012 F350 diesel? My wife says there is a mold/mildew smell coming for the truck when I have the fan on. I started thinking that with the location of the cabin air intake at the bottom of the windshield and the pretty decent size gaps in the slotted intake cover, that I may have gotten a fair amount of pine needles and pollen down in the intake. That kind of accumulation over the past 13 years that there may be a blockage in the drain. Any information would be greatly appreciated. Especially pics or diagrams. Y'all have a great day!!!

Kevin
The airbox drain is located on the airbox mounted on the firewall, passenger side of the truck. pull back gently on the passenger side wheel liner to the left of the top of the spring, you will see a small plastic bung, that is your drain.. Stick a piece of wire in the hole to clear out any clogs. Its raining here, so can't climb under for a pic yet....

My 2015 had that musty smell, and I ended up using a spray in the intake vents that was made for that purpose. Its been years, can't remember what it was called...... sorry.
 

Last edited by Boaterguy; Dec 3, 2025 at 02:09 AM.
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Old Dec 3, 2025 | 02:20 AM
  #3  
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Boaterguy
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Originally Posted by Kproper
Good day fellow Ford friends,

I was wondering if anyone would know the where abouts of the cabin air intake drain for my 2012 F350 diesel? My wife says there is a mold/mildew smell coming for the truck when I have the fan on. I started thinking that with the location of the cabin air intake at the bottom of the windshield and the pretty decent size gaps in the slotted intake cover, that I may have gotten a fair amount of pine needles and pollen down in the intake. That kind of accumulation over the past 13 years that there may be a blockage in the drain. Any information would be greatly appreciated. Especially pics or diagrams. Y'all have a great day!!!

Kevin
Pics as requested
This is the nipple that is your air box drain
This is the nipple that is your air box drain


 
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Old Dec 3, 2025 | 04:43 AM
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Thank you very much! That is extremely helpful. Have a great day and happy holidays.
 
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Old Dec 3, 2025 | 08:28 AM
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Rather than using wire , I use string trimmer line . It won't rupture the drain, and has a texture , that helps to root out any blockage .
pour water down the drain , from inside when you are finished , to flush the box and drain.
 
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