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Apexi Panel Filter - Subaru/Nissan Models (inc. 2002-2007 WRX/STi / 2003-2006 Nissan 350Z)
Apexi Panel Filter - Subaru/Nissan Models (inc. 2002-2007 WRX/STi / 2003-2006 Nissan 350Z)
Apexi Panel Filter - Subaru/Nissan Models (inc. 2002-2007 WRX/STi / 2003-2006 Nissan 350Z)
Apexi Panel Filter - Subaru/Nissan Models (inc. 2002-2007 WRX/STi / 2003-2006 Nissan 350Z)
Apexi Panel Filter - Subaru/Nissan Models (inc. 2002-2007 WRX/STi / 2003-2006 Nissan 350Z)
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User Media for: Apexi Panel Filter - Subaru/Nissan Models (inc. 2002-2007 WRX/STi / 2003-2006 Nissan 350Z)
User Media for: Apexi Panel Filter - Subaru/Nissan Models (inc. 2002-2007 WRX/STi / 2003-2006 Nissan 350Z)

Apexi Panel Filter

Subaru/Nissan Models (inc. 2002-2007 WRX/STi / 2003-2006 Nissan 350Z)

Read 21 Reviews | 5 Q&As
Part # 503-N101

In stock!
Ships today if ordered in
12 hrs 29 mins

Features & Product Details

RallySport Direct is proud to provide you with the Apexi Power Intake Panel Filter. This makes for an excellent high-performance option for the next time you are scheduled to perform major service to your vehicle that requires replacing the filter. 




  • Direct replacement for your OEM filter
  • Provides better flow for improved performance
  • Traps the smallest of particles for excellent filtration

    Product Video


    Brand: Apexi
    Filter Color: Red
    Filter Element Type: Dry
    Filter Material: Cotton
    Filter Reusable: No
    Mfgr. Warranty: 1 year
    Condition: New Product
    Return Policy:



    21 Reviews
    5 out of 5 Stars
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    Customer Photos and Videos
    Apexi Panel Filter ( Part Number: 503-N101)
    Apexi Panel Filter ( Part Number: 503-N101)
    No Complaints. 2 years ago
    5out of 5stars

    International shipping was on time and packaging was top notch. Perfect fit. Comes with a sticker to remind you when it was changed. No complaints.
    Was this review helpful?
    Work like a charm! 3 years ago
    5out of 5stars

    Drops right in, seems to work well. Quality product.
    Was this review helpful?
    2003 WRX/Apexi Thoughts 4 years ago
    5out of 5stars

    The quality of this filter is superb. The frame around it is solid and completes itself with the rubber gasket surrounding the top to ensure that the filter box is sealed. It's a little more expensive than a cheap filter from Autozone when factoring in the shipping. But, would I buy it again? Definitely! I mean, who wouldn't want more JDM in their Subaru? I did notice slightly better throttle response, but that's more likely due to changing out the dirty filter. There isn't any noticeable increase in power since it's just a drop-in filter. The included date/mileage record sticker is a nice touch so you can keep track of when to change the filter again.
    Was this review helpful?
    A+ 4 years ago
    5out of 5stars

    fit my 07 impreza 2.5i perfectly
    Was this review helpful?
    Quality for a decent price 4 years ago
    5out of 5stars

    I don't write many reviews but this is a good product. I've had three of these filters and not one problem. Better flow than OEM without sacrificing in filtration quality. It's a great little upgrade for those who want to keep their stock airbox.
    Was this review helpful?


    • Q: Washable/Reusable?  Daddy_Digital11 months ago

      Being that the filter is made of cotton, do y'all think it would be okay to wash and reuse this filter?
      • 0 of 0 people found the following answer helpful

        A:  Like an OEM style, you can knock the big stuff out of the pleats, but it's not supposed to be washed and re-used and is considered a disposable filter. But I do run this exact filter in my cars and I usually let these go quite awhile before I buy a new one, depending on the conditions I drive in of course :) Thanks!

        Rick C. @ RallySport Direct 11 months ago  
        Was this answer helpful?
    • Q: Apexi filter  Fab3 years ago

      Will this fit my 2002 Impreza RS?
    • Q: Lifespan?   Cole Matthews7 years ago

      Just installed it tonight on my 2002 WRX sedan. Fits perfectly and has worked great so far. I live in south Florida and it is my daily driver. How many miles can I expect out of this filter? No auto-x or track or anything, just some spirited driving here and there :) thanks. I presume around 4k?
    • Q: Will this filter work on my car?  hhhp10 years ago

      Hi i have a 2007 subaru impreza 2.5i and i want to replace its stock air filter. In the owner's manual it says that the stock filter has oil on it so given that this Apexi is a dry filter i was wondering if it will not cause any unwanted effects on the air sensor or the intake system. Thank you
      • 0 of 0 people found the following answer helpful

        A:  Great question! The reason the stock filter has an oil on it is because it is a wet designed filter. This one is a dry, as you stated. We have many many customers running this filter with zero downsides! There is no unwanted effects on the air sensor.

        Sterling W. @ RallySport Direct 10 years ago  
        Was this answer helpful?

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