The Racer X Fabrication thermostatic oil adapter plate kit for the 2004+ Subaru WRX / STI is available as a separate kit for those that would like to build their own oil cooler kit.


The adapter plate and spacer are CNC machined from 6061-T6 aluminum. The thermostatic adapter plate and the spacer use a square profile O-ring for a perfect seal to the OEM oil filter location. The thermostatic adapter plate uses a 185F thermostat that allows oil temperatures to raise to operating range before diverting oil through the cooler. The adapter plate comes standard in black anodize.


  • 2004+ Subaru WRX / STI

What's Included

  • Thermostatic adapter plate with 185F thermostat
  • Adapter plate spacer
Price: $129.00
    AN Fittings:

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    Item #: 0X1004-3