Genuine OEM Hyundai Air Volume Meter O-Ring, part number 2816527400. This O-ring is designed to create a tight seal for the air volume meter, preventing any unintended air leaks that could affect engine performance. It is positioned within the air intake system, specifically sealing the air volume meter. Weighing approximately 0.003 kg, this small but critical component maintains system integrity. Using a genuine OEM O-ring ensures the correct material composition and precise dimensions for a perfect, long-lasting seal, preventing vacuum leaks and maintaining accurate sensor readings.