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Mishimoto Thermostatic Oil Cooler Kit for 2015-2021 Subaru WRX, Stealth Black (MMOC-WRX-15TBK)

$822.95 $905.00
-9%
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Mishimoto Thermostatic Oil Cooler Kit for 2015-2021 Subaru WRX, Stealth Black (MMOC-WRX-15TBK)
$822.95 $905.00
$822.95 $905.00

Fits 2015-2021 Subaru WRX Base, Limited, and Premium models (2.0L FA20 DIT).

Protect your high-performance FA20 DIT engine from excessive heat with the Mishimoto direct-fit thermostatic oil cooler kit. While the factory liquid-to-liquid oil cooler is sufficient for daily commuting, it often fails to maintain safe operating temperatures during aggressive driving or track sessions. This kit replaces the stock setup with a dedicated air-to-oil heat exchanger, significantly increasing cooling capacity and engine longevity.

The system utilizes a Mishimoto sandwich plate with a rear-mounted thermostat that activates at 185°F (85°C), ensuring your oil reaches operating temperature quickly before circulating through the cooler. The kit features a large 19-row cooler mounted in the front bumper via robust, application-specific brackets for maximum airflow. Installation is a full bolt-on process and includes a silicone bypass hose for the factory liquid-to-liquid heat exchanger to maintain a clean engine bay.

  • Proven 20°F (11.1°C) drop in oil temperatures
  • 19-row stacked-plate oil cooler for optimal heat dissipation
  • Thermostatic sandwich plate (185°F / 85°C activation)
  • Preassembled stainless steel braided lines with -10AN fittings
  • Direct-fit application-specific mounting brackets
  • Includes silicone liquid-to-liquid heat exchanger bypass hose
  • Manufacturer Part Number: MMOC-WRX-15TBK
  • Mishimoto Lifetime Warranty
🔧 Fitment & Compatibility
Year Make Model Submodel
2015-2021 Subaru WRX Base
2015-2021 Subaru WRX Limited
2015-2021 Subaru WRX Premium

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