Genuine OEM Hyundai Cylinder Block O-Ring, part number 211442B001. This O-ring is designed to create a tight seal between components within the engine cylinder block, preventing leaks of fluids like oil or coolant. It is positioned within the engine assembly to maintain critical fluid containment. Made from durable rubber, it ensures long-lasting sealing performance. Choosing a genuine OEM O-ring guarantees the correct material composition and precise dimensions for a leak-free and reliable engine seal.