Cobb Top Mount Intercooler Kit Black Subaru WRX 2015-2021 | B42400-BK

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SKU: cobbB42400-BK
Availability: 17 In Stock
Type: Intercoolers Top Mount
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Fitment Information:

2015-2021 Subaru WRX

Upgrading the intercooler on your WRX can help to both increase airflow and reduce charge air temperatures, leading to more power! The COBB Top Mount Intercooler is perfect for applications where additional airflow and cooling is desired without the need to support a large upgraded turbocharger. You will remove the restrictive plastic factory charge pipe with the COBB Charge Pipe to increase airflow.


  • Increase Airflow and Cooling Capacity
  • 31% Airflow increase over the stock intercooler
  • Black Powder Coat Finish Core
  • Cast Aluminum End Tanks
  • Compatible with Stock or COBB LF BPV
  • Measurements: 15.75" x 9.76" x 3.94"
  • Retains Clearance for Aftermarket Radiators
  • Intermediate Installation Effort
  • Installation Guides - Charge Pipe, Top Mount Intercooler

To handle the added weight of the COBB intercooler core, a heavy-duty replacement mounting bracket is used on the passenger side. An included bushing isolates vibrations from the engine block. Reinforced black silicone couplers are included to complete the installation, maximizing the flow path from turbocharger to throttle body. The included COBB Thrust Tunnel is constructed of wrinkle black powder coated aluminum and attaches to the factory hood ducting to maximize airflow through the core.

The COBB Charge Pipe for the 2015-2021 Subaru WRX is constructed of 6061 aluminum tubing. An integrated billet transition smoothly takes diameter from 2" to 2.5" to allow for increased flow while maintaining clearance for larger aftermarket radiators. A wrinkle black powder coat finish gives an upgraded yet subtle appearance under the hood. The included billet turbo adapter and 5-ply silicone make for a straight forward and leak free installation.


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