Cylinder Head Hexagon Bolt - M12X1.5X180 For Porsche 928 (1983-1991) Models.

This heavy-duty cylinder head hexagon bolt is precision-engineered for Porsche 928 engines, meeting exacting specifications with M12x1.5x180 dimensions. Manufactured from premium alloy steel, it withstands the extreme clamping forces and thermal cycling inherent to high-performance engine operation. The precisely calibrated thread pitch ensures consistent torque application and prevents bolt stretch or failure under combustion pressures. Each bolt features a hardened finish that resists corrosion and maintains structural integrity across countless heat cycles. Critical for cylinder head assembly, gasket sealing, and engine reliability—this OEM-equivalent fastener is indispensable for any 928 rebuild or restoration. Choose quality that matches your Porsche's legendary engineering standards.