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Subaru OEM Blow Off Valve Flange Gasket (Part Number: )
Subaru OEM Blow Off Valve Flange Gasket (Part Number: )
Subaru OEM Blow Off Valve Flange Gasket
Subaru WRX 2002-2005 / STI 2004+
Read 11 Reviews | 6 Q&As
Part # 21896AA072

In stock! Ships same day

Features & Product Details

This is a Genuine Subaru OEM part. This gasket goes in between your blow off valve and your top mount intercooler. It is important to ensure that you never have any leaks at that connection otherwise you will lose boost, and nobody has time for that.

Replace this gasket anytime you remove, replace, or upgrade your blow-off valve. 


Brand: Subaru OEM
Location: Blow Off Valve
QTY: 1
Size: OEM
Mfgr. Warranty: 1 year
Condition: New Product
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.



11 Reviews
5 out of 5 Stars
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Customer Photos and Videos
No user media. You can upload a photo or video of your install by posting a review.
stock blow off valve gasket 2 years ago
5out of 5stars

fits my 05 stick stock blow off valve and intercooler no problems, i have reused it a couple times already and no leaks yet so this thing is pretty good.
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Cant beat oem 3 years ago
5out of 5stars

Works just like it should. Replaced the gasket that came with the turbo smart bov. Oem gasket was just what I needed to fix the leak.
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What can I say? Works perfect. 5 years ago
5out of 5stars

Works just like it's supposed to. Got to love OEM parts
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Does its job 5 years ago
5out of 5stars

Working exactly as it is intended to.
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1 of 1 people found the following review helpful
No Issues 5 years ago
5out of 5stars

Damaged my oem bov gasket when re installing the intercooler and not paying attention. Although, it wasn't leaking I replaced it with this to have a piece of mind.
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  • Q: 2006 sti tmic  mikesaavedra03284 years ago

    so i have a 2004 wrx and I'm installing a 2006 STI top mount intercooler and i noticed the bov flange is a little bit bigger then the wrx one, will this fit the 2006 sti tmic?
    • 0 of 0 people found the following answer helpful

      A:  Yes, This gasket will fit the 2006 STI intercooler.

      guest569faaee2a8d2517038b4568 @
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  • Q: 2005 legacy gt  candlegoat135 years ago

    will this work for the stock bov i have on my 2005 legacy gt?
  • Q: 04 wrx  thizzyyellow098045 years ago

    My wrx has a boost leak and I checked my stock bov and there's no gasket will this fit that
  • Q: 08+ WRX  jvigil1051186 years ago

    Why wont this fit the 08+ WRX?? I don't see one for the 08+ WRX on your website. Can you get it?
    • 0 of 0 people found the following answer helpful

      A:  If you look at your car, you will see that your BOV shape is completely different then this one. Contact us directly and we can look into getting that gasket for your vehicle to work with the stock valve.

      Kirill C. @ RallySport Direct 6 years ago  
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  • Q: Suitable on 2006 wrx with aftermarket tmic?  asetemadi482837 years ago

    I'm replacing my stock TMIC with a process west unit. Will I be able to use this gasket with the PW and the stock bypass valve? My understanding is that the rubber o-ring gasket on the 06/07 wrx models only applies to the stock tmic. Thanks in advance.
    • 0 of 0 people found the following answer helpful

      A:  Hello, From my understanding this gasket will work with all 2002-2007 WRX and 2004-2012 STi stock blow off valves. Since the Process West retains the factoy style blow off valve flange this should work great. The rubber o-ring gasket from my understanding was not introduced until the 2008 for the WRX.

      Tanner S. @ RallySport Direct 7 years ago  
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    • 2 of 2 people found the following answer helpful

      A:  I believe you are correct. You should be able to use this gasket on your stock 06/07 WRX valve as the flange shape is identical and is the same shape that is machined with the Process West top mount intercooler kit.

      Tanner S. @ RallySport Direct 7 years ago  
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This Part Fits