Genuine OEM Mercedes-Benz Oil Filler Neck Cap, part number A000010168564. This cap is designed to securely seal the engine oil filler neck, preventing oil leaks and the ingress of contaminants. The cap has dimensions of 0.07m x 0.05m x 0.07m. Genuine OEM oil filler caps are manufactured with precise sealing surfaces to maintain engine integrity and prevent contamination.