Process West Hood Scoop Splitter

Part #: PRW PWSP03
( 3 reviews )



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Brand: Process West
Color: Black
Installation Hardware Included: Reuses OEM
Material: Steel
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 2002, 2003

A common error that many people make when upgrading their intercooler is not installing a properly sized splitter. The benefit of a larger intercooler is that the large surface area can rapidly disperse heat. However when a small or stock splitter is in place, the intercooler's effective surface area is drastically reduced.

Another mistake is to completely eliminate the splitter. By doing this you allow the air to escape around the intercooler instead of going through the core. The lack of air flowing through the core will cause the intercooler to heat up, making the intake charge even warmer and reducing power.

The solution is the large Process West intercooler splitter, which forms a complete seal around the intercooler, forcing cooling air through the core, lowering charge temps and increasing power.

This splitter is designed specifically for the Process West Top Mount Intercooler. This unit may work with other brands of intercoolers, but we are not able to confirm fitment!
This product has no user uploaded media. You can upload your photo or video of your install by posting a review.



Verified Purchase
rally perfect
jonmcnva4129942 1 year ago
all the hopes and dreams for maximum airflow to top mount intercooler (especially for aps largest top mount intercooler) Not good for large intake manifold spacer gaskets by grimspeed (7mm) the 3mm worked perfect

perfect fit!
larrytang12155804 3 years ago
I took a chance but it fit very well with the turbo sx top mount.
Verified Purchase
Great piece
Jprill 4 years ago
I have an APS top mount but it didn't come with a splitter, so finding one that would fit was a gamble. This one turned out to work nearly perfect, just had to trim the rubber weather stripping to fit it under the hood. Also, I have a replica STi scoop, so I'm not sure if it would work with the stock one, but if you're going with a big TMIC on a WRX, might as well get the big scoop. Another thing I love is that there are not one, bit THREE slots for the OEM intercooler spray nozzles. Time for a trip to Subaru. Overall I'm happy that this thing works as well as it does!


  • AnswerQ: VIS Carbon hood  Chrisrudnicki12368194 3 years ago

    I have a VIS Tracer Carbon hood on my 2003 wrx wagon and wanted to know if this would mount up to the hood no problem to fit into my stock tmic?

    • A: Unfortunately we cannot verify fitment with products that we do not sell. If your stock splitter fits the hood and lines up with the intercooler, then this one should also fit.

      Zach G. 3 years ago

  • AnswerQ: Will it fit JDM 2002 STi  mustafa.alttahir43015 3 years ago

    Hi, I have a JDM 2002 STi and purchased a process west intercooler, wondering whether this scoop will work with 2002 STi (bugeye) bonnet scoop (rather than WRX bonnet scoop)?

    • A: This splitter is designed specifically for the USDM WRX hood scoop and will not be a perfect fit for the JDM hood scoop. There will be a gap that will allow air to go around the intercooler rather than through it.

      Zach G. 3 years ago

  • AnswerQ: Will it fit?  SubieDoobie 3 years ago

    Will this air splitter fit an 04' STI intercooler on my 02'? My 02's air splitter doesnt fit the whole intercooler.

    • A: It may work but the splitter is made specifically for the Process West intercooler cores so we are unable to guarantee fitment on the OEM STi core. This splitter does have a much larger opening so it may benefit you regardless if your 2002 splitter is that much smaller than the new core you installed.

      Tanner S. 3 years ago

  • AnswerQ: will it fit   larrytang12155804 4 years ago

    I have a stock 2002 hood scoop and a turbo sx top mount. was wondering if this will fit

    • A: This indeed will fit your stock 2002 hood scoop, we haven't gotten fitment confirmation of it with any intercooler cores other than the Process West so we are unsure how well it will work with the TurboXS unit.

      Tanner S. 4 years ago

  • AnswerQ: 02 wrx jdm sti hood scoop  Liquid167 4 years ago

    will this be compatible with a jdm sti hood scoop?

    • A: This Process West hood scoop splitter has only been verified to fit with the factory OEM hood scoop. Unfortunately we are only able to confirm fitment for the USDM hood scoop at the moment.

      Zach G. 4 years ago