This ELRING cylinder head bolt set, part number 949.390, is engineered to meet stringent quality standards for optimal engine function. Proper installation of the cylinder head is critical for maintaining engine integrity and preventing leaks. These bolts provide the necessary clamping force and durability required for a secure seal. ELRING is a trusted name in engine components, known for producing parts that offer excellent fit and performance. This set is designed to be a direct replacement, ensuring compatibility with your vehicle's specifications.