BMW CSF E46 M3 Triple Pass High Performance Radiator

CSF's factories are ISO certified, and are OE suppliers to many US, German and Asian manufacturers. When you purchase a CSF cooling product, you can be rest assured that it has been manufactured on the same production lines with the same high quality standards as their OE customers. Every single radiator is subject to rigorous testing procedures such as Hydrostatic Testing, Vacuum decaying and life cycle testing, and is designed to always be a "drop-in fit". Fits all 2001-2006 E46 M3 2 Row 42mm Core (Dual-Core) Featuring CSF’s Exclusive B-Tube Technology Core Features an Ultra-Efficient Fin with 6.5mm Fin Height and Multi-Louvered Design for Maximum Surface Area Contact Triple-Pass Flow Structure Allows the Coolant to Flow Across the Core of the Radiator 3 Times Before Exiting for Lowest Outlet Temperatures Possible CNC Machined “Quick Connect” Inlet/Outlet Connections CNC Machined Brackets and Fittings for Superb Fit and Durability All-Aluminum Race Style Drain Plug Smooth Satin Fin