Genuine OEM Hyundai Cylinder Block Bolt, part number 1153306186K. This essential fastener is designed to secure various components within the engine's cylinder block, playing a crucial role in maintaining the structural integrity of the engine assembly. It is installed deep within the engine block to hold parts together under extreme operating conditions. Manufactured to exact material and thread specifications, genuine OEM bolts provide the precise clamping force and durability required for reliable long-term engine performance.