Using new head bolts when performing a cylinder head installation is always a good idea however, on late-model engines that came from the factory with TTY (torque-to yield) head bolts, replacement is an absolute necessity. TTY bolts are designed to exert the maximum clamping force for a tight head gasket seal, however they permanently stretched and could fail if re-used.
Cylinder Head, Engine, Head Bolts/Studs, Head Bolts/Studs ### Tools, Mechanical
Engine Cylinder Head Bolt Set
Original price was: $61.44.$18.43Current price is: $18.43.