CSF High Performance Racing Radiator Aluminum Compatible with 1987-1991 BMW M3 E30 2.7L 7063 CSF is a leader in automotive cooling technology, with over a half-century of experience. Using that knowledge, they have developed this high-performance radiator that far surpasses the abilities of the stock unit. Starting with a two-row, triple-pass design Compatible with the coolest temperatures possible, this radiator features high-quality CNC-machined brackets and hardware. To finish it off, each radiator is hand polished to a mirror finish Compatible with that show-car shine. Best of all, it fits like the stock part, requiring no modifications Compatible with installation. If you're serious about performance, upgrade your radiator with this quality part from CSF.