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Thread: Quick engine air filter(s) replacement question

  1. #1
    Join Date
    Apr 2013
    Location
    Seattle WA USA
    Posts
    63
    My Cars
    1991 BMW 850i

    Quick engine air filter(s) replacement question

    What needs to be disassembled on the airbox(es) to replace the air filters? 91' 850i.

    I'm having a tough time and must be missing something simple.

    Thanks,

    -cAyle

  2. #2
    Join Date
    Jun 2014
    Location
    So. Cal, USA
    Posts
    216
    My Cars
    1995 740iL, 1995 850ciA
    Quote Originally Posted by cayle View Post
    What needs to be disassembled on the airbox(es) to replace the air filters? 91' 850i.

    I'm having a tough time and must be missing something simple.

    Thanks,

    -cAyle
    Yep. It is simple once you know.

    1. Loosen hose clamp (on air tube) that goes towards the MAF.

    2. Un-clip metal clamp clips that hold the top of the air filter housing to the bottom of the air filter housing.

    3. Lift up. Sometimes the air filter sicks in the top.

    4. Vacuum out bottom of air filter box.

    5. Check to see if rubber input connector to air filter box is completely rotten.

    filter.png
    Last edited by CDO5OO1A; 03-26-2018 at 02:41 AM.

  3. #3
    Join Date
    Apr 2013
    Location
    Seattle WA USA
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    63
    My Cars
    1991 BMW 850i
    Super thanks!

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