Introducing the CSF 00-06 BMW M3 (E46) Triple Pass Radiator, designed to keep your BMW's engine running cool and efficiently. With its advanced design and construction, the CSF Triple Pass Radiator offers superior cooling performance and durability for your BMW E46 M3. The innovative CSF B-Tube Technology, efficient fin design, and triple-pass flow structure ensure maximum heat transfer and lower outlet temperatures for improved engine performance. The CNC machined inlet/outlet connections, brackets, and fittings ensure a precise fit and long-lasting durability. The all-aluminum race style drain plug and mirror finish polish add to the overall quality and aesthetic appeal of this top-of-the-line radiator. Plus, the drop-in fit design makes installation quick and easy, accepting all attaching OEM components without the need for modifications. Upgrade your BMW's cooling system with the CSF Triple Pass Radiator for the ultimate in performance and reliability.