2015 + WRX Top Mount Intercooler Kit


One of the most important upgrades you can make to almost any turbocharged car is a more efficient intercooler.  Factory intercoolers are designed to be most efficient at stock power levels, so when we start generating additional heat with higher boost levels the stock unit can become overworked and quickly reach a point of heat soak.  The 2015+ WRX factory intercooler uses plastic end-tanks clamped to the intercooler core, which presents a failure point over time.  As plastic and metal expand and contract at different rates, fractures in the plastic or separation from the core is a common failure for the stock intercooler.

Top Mount Intercooler Design

The COBB Top Mount Intercooler for the 2015+ WRX solves both of those problems and then some.  We start with the largest core available in a top mounted location – a high quality, high flowing, and extremely efficient core from Garrett.  Utilizing advanced aerospace technology, Garrett intercoolers offer superior fatigue protection for the high boost pressures and temperatures of today’s extreme engines. In-house CAD-designed end tanks efficiently direct charge air in and out of the core, providing a 31% airflow increase over stock.


Seen above is flow data comparing the factory intercooler in blue, a commonly used and not so horizontal ;) competitor in yellow, and the COBB intercooler in red.  As you can clearly see, both the core and end tank designs are contributing to unmatched airflow through the intercooler.


When it comes to cooling down charge air temperature, an efficient core is key.  The other piece to that puzzle is channeling airflow through the core efficiently.  Our team has designed the COBB Thrust Tunnel, which attaches to the factory under-hood ducting and seals against the face of the intercooler.  This ducting ensures maximum airflow across the core.


At the end of the day, the goal is to produce more, cooler charge air in the name of making power.  While the dyno chart above may not seem all that impressive, this is an example of how simply changing the intercooler has the ability to increase power output across the board with more volume and cooler charge air.  This test was performed on our 2018 WRX 6MT using a Stage 1 93 Off The Shelf Map.  The car, aside from the tune and intercooler upgrade, was otherwise stock.

Fitment Note – Vehicles Supported

Initially, these intercooler kits will ONLY fit 2015-2018 WRXs.  2019-2020 WRXs have a revision to the under-hood ducting where the COBB Thrust Tunnel mounts causing it to not fit.  We are re-designing the upper portion of the Thrust Tunnel in order to add compatibility for 2019-2020 cars.  There is some suggestion that the ducting update may be a mid-2018 update, so double-check your vehicle beforehand to confirm fitment!  In the image below, the 2015-2018 shroud is on the right and the 2019-2020 shroud is on the left with the easiest identifier being the vent placement circled.

DIT WRX TMIC_Shrouds copy

Intercooler Kits

The intercooler are available in either a silver or black finish and include the COBB Charge Pipe Kit.  Installation of the intercooler REQUIRES our Charge Pipe Kit.  This initial launch will ONLY support 2015-2018 WRXs.

COBB Top Mount Intercooler Kit for 2015+ WRX – Silver 

B42405-SL_main 742110_main

COBB Top Mount Intercooler Kit for 2015+ WRX – Black

 B42405-BK_main 742110_main

For those who have already purchased the COBB Charge Pipe Kit, we do offer the intercooler as a stand alone product as well.  Links to each of those are below.

Silver Intercooler without Charge Pipe

Black Intercooler without Charge Pipe






Oliver Della on November 20, 2020 says:

Is this carb legal?

    Marshall on November 23, 2020 says:

    We are pursuing a CARB EO for the TMIC Kit.


juan gonzalez on November 21, 2020 says:

Whats the hp rating? Have a 440 hp engine right now. Trying to find something stronger.

    Marshall on November 23, 2020 says:

    This intercooler will fit your needs as it is capable of supporting 500+ horsepower.


Braulio Thillet on January 22, 2021 says:

Hi, my Subaru is 2018 but the shroud is the same as the 2019-2020.Just wanted to share this note. My car MFD 11/17.

    Marshall on January 25, 2021 says:

    Hey there! Yes, the transition between the two different shrouds seems to have taken place mid-production of MY 2018 cars. We’re working on a revised shroud for the later style shroud and should have that available very soon!