Skunk2's all - aluminum, half - size Alpha Series Radiator for the 88 - '91 CivicCRX is a direct - fit upgrade designed to dramatically increase both cooling efficiency and engine performance. Alpha Series Radiators are manufactured from lightweight and durable aluminum, feature 100 - percent brazed cores, and include polished end tanks with Skunk2's signature Alpha logo embossed along each side. Each Alpha Series Radiator features a dual - core design, high - efficiency fins for maximum cooling capabilities, and includes a genuine Skunk2 Radiator Cap for maximum performance and a premium appearance. Each Alpha Series Radiator also includes provisions for the OEM cooling fan and larger 1.25 - in. inlets and outlets, which makes it ideal for most engine swaps that utilize larger radiator hoses