Genuine OEM BMW Power Steering Oil Cooler, part number 17218515777. This component is designed to dissipate heat from the power steering fluid, ensuring consistent performance and longevity of the power steering system. It is typically located in the power steering line. The cooler has a length of 0.5 meters and a width of 0.3 meters. Genuine OEM parts are critical for maintaining the integrity and performance of your vehicle's steering system, as they are manufactured to exact specifications for proper fit and function.