Mishimoto MMOC-STI-08T Subaru WRX STI Thermostatic Oil Cooler Kit 2008+

The Mishimoto MMOC-STI-08T is a direct-fit thermostatic oil cooler kit engineered specifically for the 2008+ Subaru WRX STI. Designed to combat the heat generated during spirited street driving and track use, this kit helps maintain consistent oil temperatures, protecting engine components and preserving long-term reliability.

At the heart of this system is a large 19-row oil cooler that mounts directly in the front bumper, taking full advantage of incoming airflow for maximum cooling efficiency. The thermostatic sandwich plate regulates oil flow to the cooler, ensuring the engine reaches optimal operating temperature quickly before diverting oil through the cooler — preventing over-cooling during cold starts.

Key Features:

• Direct-fit 19-row oil cooler designed for 2008+ Subaru WRX STI
• Thermostatic sandwich plate for precise oil temperature regulation
• Preassembled stainless steel lines with -10AN fittings for a clean, leak-free connection
• Included direct-fit mounting brackets for straightforward, hassle-free installation
• Thermal reflective wrap on oil lines for heat deflection from nearby exhaust components
• Proven to reduce oil temperatures by 20–30°F with minimal pressure loss
• Available in black or silver cooler finish to suit your build
• Backed by the Mishimoto Lifetime Warranty

The MMOC-STI-08T is an ideal upgrade for any WRX STI owner looking to extend engine life and maintain consistent power output, whether on daily streets or the race track.