Mishimoto Black 19-Row Thermostatic Oil Cooler Kit for 2008-2014 Subaru WRX STI (MMOC-STI-08TBK)

Fits 2008-2014 Subaru Impreza WRX STI, including Limited and Special Edition models.

Maintain consistent engine power and protect your EJ-series engine from thermal breakdown with the Mishimoto direct-fit thermostatic oil cooler kit. This kit is engineered specifically for the GR and GV chassis, addressing the high-heat demands of spirited street driving and track sessions. By routing oil through a high-efficiency 19-row cooler mounted in the front bumper for maximum airflow, this system is proven to reduce oil temperatures by 20°F to 30°F while maintaining minimal pressure loss.

The included thermostatic sandwich plate ensures oil reaches operating temperature quickly by bypassing the cooler until the oil hits a set threshold, preventing overcooling in street applications. The kit features preassembled -10AN stainless steel braided lines and thermal reflective wrap to protect the lines from exhaust heat. This installation retains the factory liquid-to-liquid oil cooler for supplemental cooling and includes all necessary direct-fit mounting hardware.

• 19-row stacked-plate oil cooler for optimal efficiency and cooling capacity
• Reduces oil temperatures by 20°F–30°F (11°C–16°C)
• Preassembled -10AN stainless steel braided oil lines
• Thermostatic sandwich plate for superior temperature regulation
• Includes thermal reflective wrap for exhaust heat protection
• Direct-fit mounting brackets and all necessary hardware included
• Retains use of factory liquid-to-liquid oil cooler
• Manufacturer Part Number: MMOC-STI-08TBK