BMW E46 3-Series Performance Radiator, 1999-2006The Mishimoto Performance Aluminum Radiator for BMW E46 non M vehicles is designed and engineered to reduce coolant temperatures by 19 F (10. 5 C), and to protect your car from overheating during aggressive driving or hot lapping sessions. It is the ideal upgrade for your 3 series, and will outlast the weak stock plastic radiators. The Mishimoto E46 non M radiator features a large two row core, 100 percent brazed aluminum construction, and polished