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  1. #1
    Established Member Two Rings
    Join Date
    Apr 16 2009
    AZ Member #
    41274
    My Garage
    2002 Audi A4 1.8T Quattro
    Location
    Terre Haute, Indiana, USA

    Cabin Air Filter - Air Flow Direction?

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    Ok here is a stupid question and yes I know this is only 1 wrench if that.
    However I was outside replacing my cabin air filter today and when I opened it up it was really dirty and had a crap load of debrees in there.

    The thing that I have is which way is the direction of the air flow or should the arrow point.

    Should it point down like in the picture below which is what I got from the DIY B6 A4 post.


    Or should the arrow be facing up for the air flow direction? Below is the picture taken from my car when I pulled it out to replace it.





    I would say it should go down just as common sense and by looking at things and then again by the way the DIY is posted and written.

    However when I went to change my out today the arrow was facing up opposite of what the DIY has and shows.

    So either I am just dumb or the person/stealership who owned the car before me put it in the wrong way.

    Just curious so I dont do the same stupid thing they did. For now I am going to put it in the same direction as the DIY and have the Air Flow Direction arrow point downward.

    Thanks again
    2002 Dolphin Grey 1.8T | APR Stage 1 91 & 93 Octane Chip | APR R1 DV | Eibach PRO-KIT (Performance Lowering Springs) | 20% Tint All Around | Hardwired V1 and Sirus/XM Mirge Radio | Illuminated Quattro Gear Shift Knob | Vag-Com | RS4 Rear Sway Bar | LED Tails w/SYO Stealth Bulbs| K&N Air Filter |

  2. #2
    Registered Member Four Rings B6JoeS4's Avatar
    Join Date
    Sep 13 2008
    AZ Member #
    32998
    My Garage
    Terminator Cobra
    Location
    Chicago NW Burbs

    Re: Cabin Air Filter - Air Flow Direction?

    i believe the blower is in the bottom half so the air flow should be going up. so arrows up. i could be wrong though

  3. #3
    Established Member Two Rings nezach's Avatar
    Join Date
    Nov 03 2007
    AZ Member #
    22306
    My Garage
    02 A4 3.0 Quattro 6spd
    Location
    Chicago, IL

    Re: Cabin Air Filter - Air Flow Direction?

    I doubt it really matters, but I have mine pointing down.

  4. #4
    Established Member Two Rings Ryan.'s Avatar
    Join Date
    Mar 08 2009
    AZ Member #
    39631
    My Garage
    '02 A4 3.0 6-Speed
    Location
    Roswell, GA

    Re: Cabin Air Filter - Air Flow Direction?

    I think its meant to point down

    Just feel for the air flow and point the filter in the correct direction :)


    EDIT, you dont even have to check for air flow, just see which side is dusty :)

    actually now that I think about it, keep it the way it was or all the dust that stuck in will blow out into your face when you turn the AC on :p

  5. #5
    Veteran Member Three Rings stormscr3's Avatar
    Join Date
    Jul 08 2008
    AZ Member #
    30673
    My Garage
    2011 Ford Edge
    Location
    MA

    Re: Cabin Air Filter - Air Flow Direction?

    It is supposed to point down. The cabin blower motor sucks air in from the engine bay area and blows it into the cabin. Therefore the cabin filter arrow should be down signaling that the air is being sucked through the filter into the cabin.

  6. #6
    Veteran Member Three Rings Trev's Avatar
    Join Date
    Nov 25 2007
    AZ Member #
    22840
    My Garage
    b6 a4tq, 95 Eagle Talon (Rip)
    Location
    British Columbia, Canada

    Re: Cabin Air Filter - Air Flow Direction?

    Check the manual. It should say something in there
    Some Go, No show
    02 Qtip, Apr II+ 93Oct, tt-225 injectors, Ecode fmic, W/M Injection, Magnaflow 16601,TT225 Down Pipe, VMR test pipe, APR TIP, Forge 007, Vag-Com, Podi V2, RS4 LSB, ECS Snub, USP front lower, S4 Front Brakes, Slotted/Dimpled Rotors f/r, SS Lines f/r, 19x8.5 & 19x9.5 RPM 505's, RNS-E

    Wish List
    Custom fab intake heat shield, Custom fab system in trunk, Adjustable Coilovers, S4 blades, DTH side skirts

  7. #7
    Established Member Two Rings
    Join Date
    Apr 16 2009
    AZ Member #
    41274
    My Garage
    2002 Audi A4 1.8T Quattro
    Location
    Terre Haute, Indiana, USA

    Re: Cabin Air Filter - Air Flow Direction?

    Thanks for the information all, very much appreciated. It looks like it is suppose to be pointing down as some of you have suggested. Which makes total sense. I was just curious though since it was different and well to me it did not make sense at all.

    Thanks again everyone very much appreciated.
    2002 Dolphin Grey 1.8T | APR Stage 1 91 & 93 Octane Chip | APR R1 DV | Eibach PRO-KIT (Performance Lowering Springs) | 20% Tint All Around | Hardwired V1 and Sirus/XM Mirge Radio | Illuminated Quattro Gear Shift Knob | Vag-Com | RS4 Rear Sway Bar | LED Tails w/SYO Stealth Bulbs| K&N Air Filter |



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