Model-adapted Aluminum water cooler for BMW E90 M3 A direct replacement and upgrade of the original water cooler - 14% larger cell package volume, 11193 cm3 vs 9795 cm3 - 8% lower temperature after the radiator under the same test conditions: 73 ° C vs. 79 ° C! See diagram below! - Fits directly in specified car models! - Drop-in mounting, no modifications are necessary, fits together with the AC condenser. High-efficiency cell package with 6.3 mm high cooling cells of "multi-louvered design". - 2-row cell package (dual core design). - CNC machined quick couplings for hose connections. - CNC machined brackets for radiator suspension and fan cover.