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Cabin Air filter part number clarification please.

Discussion in '5th Gen 4Runners (2010-2024)' started by wolfman, Jun 25, 2022.

  1. Jun 30, 2022 at 5:56 PM
    #31
    Brodie

    Brodie New Member

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    Replaced the one in my 2021 4runner today. Something had been chewing on it but no nest. When you replace it make sure the airflow arrow is pointing down. The air goes in the top and comes out the bottom.
     
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  2. Jun 30, 2022 at 10:43 PM
    #32
    4runningMan

    4runningMan New Member

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    Yep twice a year for me, too. If you live in a climate where you often use the recirculate function on the blower, they can get pretty nasty.
     
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  3. Jun 30, 2022 at 10:49 PM
    #33
    DallasTRDPro

    DallasTRDPro New Member

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    Thats the part number that was on mine today.
     
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  4. Jul 1, 2022 at 10:13 AM
    #34
    j4unner

    j4unner shootz brah..

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  5. Jul 1, 2022 at 10:51 AM
    #35
    josephp732

    josephp732 New Member

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    One of the benefits of the K&N version is that the cotton element is incased in a wire mesh. Pretty much chew proof.

    K&N.jpg
     
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  6. Jul 1, 2022 at 11:43 AM
    #36
    Beachguy

    Beachguy Normal turned up too loud

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    When you open it you'll see the airflow arrows pointing down. It says "Air Flow" and has a down arrow. You can't miss it.
     
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  7. Jul 1, 2022 at 1:03 PM
    #37
    DallasTRDPro

    DallasTRDPro New Member

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    Mine has the arrow point ^ and says up and thats how the old one came was installed.
     
  8. Jul 1, 2022 at 1:07 PM
    #38
    DallasTRDPro

    DallasTRDPro New Member

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    This is 10,800 miles in just at 7 months. And the new one looks smaller with larger space between the pleats.
    Part #87139-YZZ10

    66B30EB1-585E-4BB3-A280-4075C1ADD70F_1_201_a.jpg
     
  9. Jul 1, 2022 at 3:52 PM
    #39
    Brodie

    Brodie New Member

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    Does it say Air Flow on it? f not that arrow may just be the Installation Instructions. My origional also had the arrow pointed up but Air Flow was not mentioned. The replacement I bought, not Toyota, has instructions in box the says the arrow points toward the direction of the air passing thru. If you look at the picture on post 2 of the Toyota Filter it only says up, nothing about air flow.
     
  10. Jul 2, 2022 at 2:38 AM
    #40
    DallasTRDPro

    DallasTRDPro New Member

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    I'm pretty sure it didn't say airflow. I also watched a video that said make sure the arrow is up.
     
  11. Jul 2, 2022 at 2:42 AM
    #41
    DallasTRDPro

    DallasTRDPro New Member

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    Mine looked like shit after 10K miles in a dry, but not a desert climate while being in a parking garage 21 hours a day. Dallas has a lot of pollen though. My engine air filter didn't look that bad, but I swapped it for an AEM dry filter. Its about half the size as the OEM. I might even go with the dry K&N cabin filter mainly because these filters are getting so expensive just like everything else.
     
    Last edited: Jul 2, 2022
  12. Jul 2, 2022 at 4:18 AM
    #42
    Beachguy

    Beachguy Normal turned up too loud

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  13. Jul 2, 2022 at 4:35 AM
    #43
    DallasTRDPro

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    Lesson to be learned is pay attention to which filter you get. OEM will be arrows up. Knockoffs could be anything.
     
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  14. Jul 2, 2022 at 7:41 AM
    #44
    4runningMan

    4runningMan New Member

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    Looking at the filter medium, it doesn’t appear to me to matter which way the filter is installed?

    But airflow is definitely down. So gravity can keep the debris in place.
     
  15. Jul 2, 2022 at 8:00 AM
    #45
    Brodie

    Brodie New Member

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    This is copied from the internet so it must be true.
    HVAC filter direction matters because air flows through it in one direction. While its two sides look the same, one is more porous to allow air to get inside. Otherwise, air can't pass, and the unit itself must work harder and longer, leading to higher energy consumption and efficiency loss.
     
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  16. Jul 2, 2022 at 6:20 PM
    #46
    4runningMan

    4runningMan New Member

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    I can see that being the case with a multi layered filter (HEPA, etc). But the single layer filters in our trucks… prob isn’t gonna make much difference. They are mostly to keep debris out of the fan.

    That said, if it has an arrow on it, obey the arrow! But if it doesn’t, and it’s just a cheap single layer Amazon filter without an arrow, don’t sweat it.
     
  17. Jul 2, 2022 at 7:01 PM
    #47
    4runGirl88

    4runGirl88 Get a little mud on the tires!

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    20220702_185456.jpg
    Replaced mine with one of these recently from local Auto Zone.

    Got in the rig with my daughter, a/c on, and both of us thought we smelled something funky. Checked air filter next day, and realized it was time. Glad these are easy to access.

    Might look into the $16 2-pack someone posted earlier in the future to save a bit of money.
     
  18. Jul 16, 2022 at 7:57 PM
    #48
    wolfman

    wolfman [OP] New Member

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    Thanks for this. Apparently that part number no longer is available.
     
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