Genuine OEM BMW Engine Oil Filler Cap Seal, part number 11127526447. This seal is designed to provide a tight closure for the engine oil filler cap, preventing oil leaks and the ingress of contaminants into the engine. A proper seal is essential for maintaining engine oil integrity and performance. The exact material and shape ensure a perfect fit and reliable sealing. Genuine OEM parts offer the precise material composition and dimensions for effective and long-lasting sealing.