Genuine OEM BMW Oil Pan Gasket, part number 11137809836. This gasket is designed to create a seal between the engine's oil pan and the engine block, preventing oil from leaking out. It is typically made from a combination of rubber and metal or a composite material to withstand oil and temperature variations. Proper sealing is essential for maintaining oil levels and engine health. Genuine OEM parts offer the exact fit and material properties required for a reliable, leak-free seal.