AEM DryFlow Panel Air Filter

Part #: AEM 28-20304
( 27 reviews )


MSRP: $49.99


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Return Policy | Shipping



Brand: AEM
Filter Color: Red
Filter Element Type: Dry
Filter Material: Synthetic
Filter Reusable: Yes
Mfgr. Warranty: Limited Lifetime Warranty
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.


Subaru Impreza
WRX STI Hatchback 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX STI Special Edition Hatchback 2010WRX STI Limited Sedan 2011, 2012, 2013, 2014WRX STI Limited Hatchback 2011, 2012, 2013, 2014WRX STI Sedan 2011, 2012, 2013, 2014WRX Sedan 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX Hatchback 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX Premium Sedan 2010, 2011, 2012, 2013, 2014WRX Premium Hatchback 2010, 2011, 2012, 2013, 2014WRX Limited Sedan 2010, 2011, 2012, 2013, 2014WRX Limited Hatchback 2010, 2011, 2012, 2013, 2014Outback Sport 2008, 2009, 2010Base 2012, 2013, 2014Limited 2012, 2013, 2014Premium 2012, 2013, 2014Sport Limited 2012, 2013, 2014Sport Premium 2012, 2013, 20142.5 GT Sedan 2009, 20102.5 GT Hatchback 2009, 20102.5i Sedan 2008, 2009, 2010, 20112.5i Hatchback 2008, 2009, 2010, 20112.5i Premium Sedan 2010, 20112.5i Premium Hatchback 2010, 2011
Subaru Legacy
i 2005GT Limited 2005, 2007, 2008, 2009Limited 2005GT 2005, 2006GT spec.B 2006, 2007, 2008, 20092.5i 2006, 2008, 2009, 2010, 2011, 2012, 20132.5i Limited 2007, 2008, 2009, 2012, 20132.5i Special Edition 2007, 20083.0 R Limited 2008, 20093.0 R 20093.6R 2010, 2011, 2012, 20132.5GT 2010, 2011, 20122.5i Premium 2012, 20133.6R Limited 2012, 20133.6R Premium 2012
Subaru Forester
XT 2009X 2009, 2010, 2011, 2012X Limited 2009, 2010, 2011, 2012X Premium 2009, 2010, 2011, 2012XT Limited 2009, 2010XT Premium 2010, 2011, 2012, 2013X Touring 2011, 2012XT Touring 2011, 2012, 2013
Subaru Outback
i 2005XT 2005, 2006Limited 2005XT Limited 2005, 2007, 2008, 2009R 2005, 2006VDC Limited 2005R L.L. Bean Edition 2005, 2006, 2007, 20082.5i 2006, 2007, 2008, 2009, 2010, 2011R VDC Limited 20062.5i Limited 2006, 2007, 2008, 2009, 20102.5i Basic 20072.5i L.L. Bean Edition 2008Base 20082.5i Limited L.L. Bean Edition 20083.0 R Limited 20092.5i Premium 20103.6R 2010, 2011
Subaru Tribeca
Base 2006, 2007, 2008, 2009Limited 2006, 2007, 2008, 2009, 2010Premium 2010Touring 2010
Subaru XV Crosstrek
Limited 2013, 2014Premium 2013, 2014Hybrid 2014
Subaru WRX STI
Base 2015

AEM Dryflow Air Filters are washable synthetic air filters designed for an optimum combination of air flow, filtration, and performance. AEM Dryflow filters use an innovative high performance oil-free filtration material that allows easy cleaning, durable service, and excellent filtration.

REVIEWS ( 27 )


Verified Purchase
Great Quality
kbc34 2 months ago
Installed this filter then ran into AP issues so had to de-install. Don't even bother trying to slip this in just by removing the two airbox clips, its not happening. This filter is much thicker/beefier than stock. Just remove the the side of the airbox that connects to the intake tube and you'll be good. Hopefully it gives me what other people are claiming.... better mpg, little more kick and better sound. Will amend when I get the AP and take it for a drive.
Verified Purchase
Competitively priced filter
jag7885 3 months ago
Great filter for the price. Excellent fit & finish. I was looking for something to replace my K&N. My one gripe would be the sheer size. It isn't simply a drop in filter. I had to remove the front bracket holding the front half of the intake assembly to get this to fit.
Verified Purchase
High quality!
subyski 3 months ago
Excellent Quality. I installed this on a 2008 Subaru Impreza 2.5i MT. Need to remove the airbox to install as the panel filter is too thick.
Verified Purchase
High quality!
subyski 3 months ago
Excellent Quality. I installed this on a 2008 Subaru Impreza 2.5i MT. Need to remove the airbox to install as the panel filter is too thick.
Verified Purchase
AEM drop in
Don 4 months ago
It filters well. The fine dust I used to have with other filters is gone. I wanted an air filter that requires no oiling and this was perfect. It has the biggest outer seal to prevent gaps from appearing from the air box when it shifts. I had a problem with an aftermarket air box piece that shifted during driving and all other filter on the market with exception of the K&N had outer seals that are smaller than stock. Better filtration, better air box sealing.


  • AnswerQ: Tune or no ?   Sessions19 8 months ago

    I have an 08 WRX with an Indvia Q300 catback exhaust. Can I drop this in without having an accessport or tune? I see conflicting answers to this question... Q: Retune? I have a stock 11 sti with spt cat back. can I throw This in before having an access port? by Buschbebad on 09/11/13 Click Here if you think this is Helpful! Is this helpful? A: This item does not require a tune and can be installed immediately. by Nick S. on 09/11/13 Click Here if you think this is Helpful! Is this helpful? (1) person found this helpful. Submit an Answer Q: do you need a tune do you need a tune for this? 2012 wrx sedan by bigrob74 on 03/20/13 Click Here if you think this is Helpful! Is this helpful? A: For any intake modification, even a drop in filter a tune is suggested. 08+ WRX's and STi's are very sensitive to alterations to the airflow by Kirill C. on 03/21/13

    • A: Tuning is generally not required for drop in high flow air filters, but we do recommend a custom tune to be safe. The technical answer is, yes, tuning is recommended.

      Zach G. 8 months ago

    • A: Good deal, Thank you!

      Sessions19 8 months ago

  • AnswerQ: Safe for Cobb AP Stage 1?  joejoe69 1 year ago

    Is this filter okay to use with the stock airbox and Cobb AP stage 1 flash? I'm sure this filter won't add much power benefits over the stock paper filter but I just want better filtration.

    • A: This will be fine with Cobb Stage 1 as this is a oem replacement.

      Kyle A. 1 year ago

    • A: Right on, thanks!

      joejoe69 1 year ago

  • AnswerQ: Filtration  Phonyfool 2 years ago

    What is the particle of filtration rating?

    • A: There is not a micron filtration rating for AEM panel filters.

      Zach G. 2 years ago

  • AnswerQ: Crosstrek  stick837347074 2 years ago

    Isn't this the same size for WRX and Crosstrek models? They look the same but it's not listed as a replacement.

    • A: This filter will fit XV Crosstrek models and we will have that added to our Confirmed Applications list. Thank you for bringing this to our attention.

      Zach G. 2 years ago

  • AnswerQ: Cleaner?  greenc51 2 years ago

    I've had this in for a few month now and need to clean it. However, I do not see the AEM Dryflow cleaner on your website. Do you sell it?

    • A: Part number AEM 1-1000 is the Dryflow Cleaning solution. We have it available on our website if you search the part number in the search bar.

      Nick S. 2 years ago