Subaru SPT High Flow Air Intake

Part #: SUB SOA8431000
( 13 reviews )



Free Shipping

Free Shipping offer applies to orders over $200.00 to the 48 states via UPS Ground or USPS Priority.
Offer Excludes shipments to Alaska, Hawaii and Military Boxes. Items that are too large to ship via UPS or USPS are excluded from this offer.
Please read more on our full shipping policy HERE

   3 left in stock

   In Stock: Ships the Same Day
Return Policy | Shipping



Brand: Subaru OEM
Carb Exempt: Yes
Carb E.O. Number: D-369-15
Airbox Included: No
Filter Color: Blue
Filter Element Type: Dry
Filter Material: Cotton
Filter Reusable: No
Piping Color: Grey
Piping Material: Aluminum
Tuning Required: No
Mfgr. Warranty: 1 year
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 2004, 2005, 2006, 2007WRX STI Limited 2007WRX 2002, 2003, 2004, 2005, 2006, 2007WRX TR 2006, 2007WRX Limited 2006, 2007

The SPT High Flow Air Intake is constructed of 319 diecast aluminum, manufactured to ensure the smoothest high flowing bends. Each system includes a silicone-reinforced boot, anti-vibration mounting system, stainless steel t-bolt clamps, and a SPT 4-layer cotton gauze filter with a built in velocity stack for smooth air flow.

The intake is coated in a new gunmetal gray-textured powder-coat finish. Dyno-tested and when combined with the SPT Heat Shield and SPT Performance Exhaust System, produces up to 18HP and 20 lb-ft of torque on a stock 2006 WRX, and 45HP with 24 lb-ft of torque on a stock 2006 STI model.

Installation of High Flow air Intake System will result in increased turbocharger and diverter air flow sounds during operation.

REVIEWS ( 13 )



awesome and very easy to install
liljon66887345740 2 years ago
this was a great and very easy product to install took maybe an hour at most but only because i was messing around and cleaning stuff around it. product is awesome though and just like a couple other people said you hear your bov way better. the thing sounds mean!
Verified Purchase
coleisboosted 2 years ago
Spool up and bpv are very present and sound great. Also like how product performs, fast shipping from RSD. However - I found that the small bolts for the MAF did not fit the threaded holes in the intake. Not a huge deal, ended up re-threading them.

(Somewhat)Suitable replacement for stock
bowlcutsaresweet 2 years ago
This intake is installed on my 2005 Saabaru 9-2x. Intake air temperatures are quite high when stopped but plummet to around ambient when moving. Also consider the quality of the air (particulates) in the engine bay could negatively impact reliability. The only way to correct this is with a heat shield of some sort at which point you'll begin to question what advantage this has over the stock intake setup.
Verified Purchase
Great intake
da_plow4eva51099 2 years ago
What can you expect from the folks at SPT? Great products, easy install. Can't really feel a difference but you sure can here your turbo spool!!

sti tuner 2 years ago
this product is not very good. it soaks heat so bad you can warm your hands on it in winter, and it summer dont even think of touching it- you will burn! the filter faces the back and doesnt suck much air there. i put my hks kit back on after installing this part and i got way more horse power out of it!this part will reduce horsepwer - bottom line. hks is the way to go.honestly! waste of money. back to back install no comparison.


  • AnswerQ: Will this fit a 2004 Forester XT?  chandwki 4 months ago

    Would this fit the '04 Forester XT with the EJ255 engine? The description says it fits an 04 STI which is a similar engine to the 04 FXT.

    • A: Unfortunately, we cannot confirm fitment for Forester XT models.

      Brady R 4 months ago

  • AnswerQ: 2004 STi and up   JeyMT 1 year ago

    Is this genuine Subaru part CARB legal for California???

    • A: Yes, this intake is CARB legal for California.

      Brady R. 1 year ago

  • AnswerQ: MAF readings needs adjustment after install?  Kruimel 2 years ago

    Is it necessary to adjust the MAF readings in the ECU? I understand for most aftermarket air filter system this is the case otherwise it can damage the engine?

    • A: SPT claims that tuning is not required, however we strongly recommend a tune with any intake for the best results.

      guest56ad69792a8d256e198b66b5 2 years ago

  • AnswerQ: fitment with other filters  yang 2 years ago

    hi, quick question... will this product work with other brands of filters that are re-usable, for example K&N?

    • A: You may be able to use a universal filter with this intake, but we recommend using the included filter so the flow amount and characteristics do not change.

      Zach G. 2 years ago

  • AnswerQ: Is a tune needed?  blakexr10002193 2 years ago

    I get mixed answers. Is a tune needed to run this intake on my 03 WRX?

    • A: SPT claims that tuning is not required, however we strongly recommend a tune with any intake for the best results.

      Zach G. 2 years ago