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Mishimoto Subaru 15-21 WRX - Thermostatic Oil Cooler Kit

Mishimoto Subaru 15-21 WRX - Thermostatic Oil Cooler Kit


Regular price $917.82 USD
Regular price Sale price $917.82 USD
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High oil temperatures can wreak havoc on your high-performance FA20 DIT. Protect your investment with the Mishimoto direct-fit thermostatic oil cooler kit designed specifically for the 2015+ Subaru WRX. The WRX has tons to offer with its turbocharged engine and fantastic AWD system, but the stock liquid-to-liquid oil cooler cannot handle prolonged aggressive driving conditions.

This kit is designed to replace the stock liquid-to-liquid with a Mishimoto Sandwich Plate with a Rear-Mounted Thermostat, which includes a built-in thermostat with a 185 Degrees Fahrenheit / 85 Degrees Celsius activation temperature. Properly regulated oil temperatures become even more important if you have modified your vehicle or spend time tracking your WRX.

Mishimoto's direct-fit oil cooler is engineered to reduce oil temperatures and extend the life of your engine. For optimal airflow and cooling, this kit includes a large 19-row cooler that is mounted in the front bumper with robust application-specific brackets. The included application-specific silicone liquid-to-liquid heat exchanger bypass hose provides a clean look in the engine bay.

This kit includes preassembled stainless steel lines with -10AN fittings to help direct the oil to and from the cooler. With this setup, your WRX can achieve a XX Degrees Fahrenheit (XX.X Degrees Celsius) drop in oil temperatures with minimal pressure loss. The Mishimoto Subaru WRX Thermostatic Oil Cooler Kit is available with either a Sleek Silver or Stealth Black oil cooler. As with all our products, this kit includes the Mishimoto Lifetime Warranty.


  • Direct fit for the 2015+ Subaru WRX
  • Proven 20+°F (11.1+°C) drop in oil temperature
  • Full bolt-on oil cooling solution for street and track vehicles
  • No modification is necessary for installation
  • Billet aluminum thermostatic oil sandwich plate allows oil to reach optimum temperature
  • 19-row oil cooler strategically mounted in the lower grille for maximum airflow
  • CNC-machined aluminum spacer for the oil sandwich plate
  • Silicone hose bypasses the stock liquid-to-liquid heat exchanger
  • Includes preassembled stainless steel braided oil lines with -10AN fittings
  • Cooler available in Sleek Silver or Stealth Black
  • Increases oil capacity by 0.75 qt
  • This oil cooler kit retains the use of your stock liquid to liquid oil cooler unit
  • Mishimoto Lifetime Warranty



  • (2) Application-Specific Mounting Brackets
  • (1) Application-Specific Oil Sandwich Plate
  • (1) 19-Row Oil Cooler (Silver or Black)
  • (1) 4ft Stainless Steel Braided Hose w/ 45° and 90° -10AN Fittings
  • (1) 5ft Stainless Steel Braided Hose w/ 45° and 90° -10AN Fittings
  • (1) Stainless Steel Sandwich Plate Adapter, M20 x M20
  • (2) Banjo Fitting w/ Bolt M20 x -10AN, Black
  • (1) Large O-Ring
  • (1) Mounting Hardware Set
  • Mishimoto Lifetime Warranty


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