Details

• Brand:

  

  

• SKU:

  GR3Z-6065-B

• Other Names:

  Bolt Hex.Head

• Description:

  This is a genuine Ford engine cylinder head bolt for the 2015-2020 Mustang equipped with the 5.0L Coyote V8. The cylinder head bolt clamps the aluminum cylinder head to the engine block, compressing the head gasket to seal combustion pressure, coolant passages, and oil galleries between the head and block deck. Ford torques these fasteners in a precise sequence to establish uniform clamping load across the head. This is a torque-to-yield fastener, meaning it is stretched past its elastic limit during the factory torque-plus-angle procedure and permanently deformed as a result. Because a torque-to-yield bolt cannot return to its original length, it must not be reused; always install a new head bolt whenever the cylinder head is removed or the head gasket is serviced, and follow the Ford tightening sequence and torque-angle specification exactly. Reusing a stretched bolt risks inadequate clamp load, head gasket failure, coolant intrusion, and warping. A buyer typically needs this part during a head gasket replacement, cylinder head resurface, or engine rebuild, often prompted by overheating, white exhaust smoke, coolant loss, or combustion gases in the cooling system. Ford catalogs this part as the Engine Cylinder Head Bolt with a hex head design for the modular 5.0L application, and it should be installed clean and lightly lubricated per the workshop manual.

• Replaces:

  gr3z6065a

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