Genuine OEM Hyundai Cylinder Block O-Ring, part number 211632U000. This O-ring is designed to provide a reliable, leak-proof seal for components connected to the cylinder block, crucial for maintaining proper fluid containment and engine performance. It is positioned at the base of the cylinder block assembly. Weighing approximately 0.025 kg, this genuine OEM O-ring is manufactured from high-quality, heat-resistant material to ensure precise fitment and long-lasting sealing integrity under demanding engine operating conditions.