Oil temperatures in high performance engines often reach dangerously high levels where the potential of failure is drastically increased. Since we often push cars past their intended limit from the factory, the addition of a Greddy GREX Oil Cooler Kit for your WRX or STi helps prolong the life of your oil, and ultimately your engine. Greddy Oil Cooler Kits feature an inner-fin core design, and durable stainless steel lines with quality fittings. This kit is specific for the WRX and STi, but may require some modification for the mounting bracket. Manual Transmission ONLY - 02-07 WRX & 04-07 STi. May take a few weeks for delivery.