This is CSF Race-Spec Oil Cooler For BMW E6X M5/M6.
BMW E60 M5 / E6X M6 High-Performance Oil Cooler Features (CSF #8275) High Efficiency & Rugged Durability Bar/Plate Design “Aero-Flow†Bar Lightweight Construction...
High Efficiency & Rugged Durability Bar/Plate DesignAero-Flow Bar Lightweight Construction for Strength and Maximum FlowCast End Tanks with 100% Tig Welded ConstructionSatin Black Finish for Extreme Protection Against Corrosion and DebrisCNC Machined Mounting Brackets and OEM Style Inlet/Outlet ConnectionRequires minor trimming of the plastic shroud to installIndividually Leak and Pressure Tested2-Year Limited Warranty