Genuine OEM Hyundai Air Volume Meter O-Ring, part number 2816527800. This O-ring is designed to provide a critical airtight seal for the air volume meter, preventing unfiltered air from entering the intake system and ensuring accurate measurement of incoming air. Made from a durable elastomer, it weighs approximately 0.01 kg. Choosing a genuine OEM O-ring ensures the correct material composition, precise dimensions, and resistance to engine bay conditions, which are vital for maintaining proper engine performance and preventing vacuum leaks.