Toyota 80910-76059-71 Cylinder Head Bolt Set

This cylinder head bolt set contains 18 high-strength alloy steel fasteners engineered to Toyota OEM specifications for 1Z series diesel engines. The bolts feature M11 thread diameter and 163 mm overall length with female star drive design. Designed as torque-to-yield fasteners, they provide controlled stretch during installation to maintain consistent clamping load under thermal cycling. Direct replacement for Toyota part number 80910-76059-71. Compatible with Toyota 1Z, 2Z, 3Z, 11Z, 12Z, 13Z, 14Z, and 15Z engine variants used in industrial and marine applications including Northern Lights M964 marine generator sets. Each bolt must be replaced during cylinder head service to ensure sealing integrity.