CSF Radiator for BMW 1M/135i/335/Z4 (Auto)

An all-aluminum, 2-row radiator for automatic-transmission BMW E82 1M, 08-11 E8X 135i, 07-11 E9X 335i, and E89 Z4, built with CSF's B-Tube core for improved heat transfer. Note: it replaces BMW part 17117547059 only; BMW later revised the radiator to 17117788903, which lacks the extra lower-right port and requires a separate blind socket for that coolant line.