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The Mishimoto thermostatic oil cooler kit for 2015+ Subaru WRX replaces the factory liquid‑to‑liquid cooler with a sandwich plate and rear‑mounted thermostat that opens at 185°F. It adds a large 19‑row cooler, silicone bypass hose, preassembled -10AN stainless lines and application‑specific brackets to reduce oil temperatures on street and track use. The bolt‑on kit requires no vehicle modification and helps protect the FA20 DIT under aggressive use.
Mishimoto 2015 Subaru WRX Thermostatic Oil Cooler Kit
