DeutschTuning proudly offers CSF Triple Pass Radiator For BMW E46 M3. 2 Row 42mm Core (Dual-Core) Featuring CSF’s Exclusive B-Tube TechnologyCore Features an Ultra-Efficient Fin with 6.5mm Fin Height and Multi-Louvered Design for Maximum Surface Area ContactTriple-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 DurabilityAll-Aluminum Race Style Drain Plug1-Hour “Mirror Finish” Hand Polish“Drop-in Fit” Requiring No Modifications to Install – Accepts All Attaching OEM Components Including “Quick Connect” Hoses, AC Condenser, Mounting Brackets and Fan ShroudOEM #: 17102228941