Skunk2's all - aluminum, full - size Ultra Series Radiator for the FRSBRZ is a direct - fit upgrade designed to dramatically increase both cooling efficiency and engine performance. Ultra Series Radiators are manufactured from lightweight and durable aluminum, feature 100 - percent brazed cores, and include polished end tanks with Skunk2's signature Ultra logo embossed along each side. Each Ultra Series Radiator features high - efficiency fins for maximum cooling capabilities. Each Ultra Series Radiator also includes provisions for the OEM cooling fan and OEM - compatible, 1.50 - in. inlets and outlets, and an integrated oil cooler. Ultra Series Radiators feature a built in oil cooler in the end tank.