Genuine Porsche 9A7-008-634-00 Cylinder Head Torx Bolt M12 x 1.5 x 140

The Genuine Porsche 9A7-008-634-00 is a factory original cylinder head bolt designed specifically for Porsche 911 (991 generation) engines. This precision-engineered fastener ensures proper cylinder head retention and sealing under high-stress operating conditions.

Key Specifications:

• Thread Size: M12 x 1.5
• Length: 140mm
• Drive Type: Torx head design for optimal torque transfer
• Material: High-strength steel construction
• Genuine OEM Porsche part

Features & Benefits:

• Manufactured to exact Porsche factory specifications for precise fit and function
• Torx head design reduces cam-out and allows for accurate torque application
• Critical engine fastener ensuring proper cylinder head clamping force
• Essential component during engine rebuilds, cylinder head service, or head gasket replacement
• Designed to meet the demanding requirements of high-performance Porsche engines

This cylinder head bolt is a critical fastener in the engine assembly and should be replaced during any cylinder head service or engine rebuild. Porsche recommends using genuine OEM fasteners to maintain proper engine integrity and performance. Always follow factory torque specifications and tightening procedures during installation.

Alternate Part Numbers: 9A700863400, 9A7 008 634 00, 9A7.008.634.00