Mishimoto Performance Aluminium Radiator for BMW E46 For either tuned daily use or competition Mishimoto radiators are an essential modification for your car. By increasing heat exchange they guarantee lower operating temperatures improving vehicle reliability and performance. They are made from aircraft quality aluminium TIG welded and polished. Their dual core construction and high thermal conductivity provides up to a 35% increase in efficiency compared to the OEM item. Mishimoto radiators are guaranteed for life. They are designed to be a direct fit installing in place of the OEM radiator.  Technical overview Overall size : 70.5 cm (27.75) x 47.3 cm (18.6) x 9.5 cm (3.74) Core size : 58 cm (22.83) x 45 cm (17.75) Rows : 2 Inlet diameter : 3.8 cm (1.5) Outlet diameter : 3.8 cm (1.5) Core thickness : 3.8 cm (1.5) Tank wall thickness : 0.2 cm (.08) Magnetic drain plug thread size : M12 x 1.5 Drain plug thread length : 12mm (.47) To suit : BMW E46 323i 325i 328i 330i