This ELRING cylinder head bolt, part number 389.140, is engineered to meet stringent automotive standards. It provides the necessary clamping force to ensure a proper seal between the cylinder head and the engine block, which is critical for engine operation. Crafted from durable materials, this bolt is designed to withstand the high temperatures and pressures found within an engine. Its precise threading and dimensions ensure a perfect fit and reliable installation, contributing to the overall longevity and efficiency of your vehicle's engine. Proper installation of the cylinder head bolt is essential for preventing leaks and maintaining optimal engine performance. ELRING is a trusted name in engine components, known for its commitment to quality and precision engineering.