Genuine OEM BMW Engine Oil Pan, part number 11138590016. This component serves as the reservoir for engine oil, collecting it as it drains from the engine components. It is essential for proper lubrication and cooling of the engine. The oil pan is typically located at the bottom of the engine block and includes a drain plug for oil changes. Genuine OEM oil pans are manufactured to precise specifications to ensure a leak-free seal with the engine block and proper oil capacity.