Universal Head Bolt Kits

Time-Sert and Big-Sert universal head bolt repair solutions

Professional Head Bolt Thread Repair

Universal head bolt repair kits for common metric and imperial thread sizes. Available in both standard Time-Sert and oversized Big-Sert configurations for various repair scenarios.

Universal Time-Sert Head Bolt Kits

KitKit Part NoInsert Part No
M10x1.5 Head BoltTS7580TS10155
M10x1.25 Head BoltTS6250TS10129
M11x1.5 Head BoltTS2200TS11155
M11x1.25 Head BoltTS11125TS11127
M11x2.0 Head BoltTS3700TS112030
M12x1.5 Head BoltTS4800TS12159
M12x1.25 Head BoltTS4700TS12127
M12x1.75 Head BoltTS4900TS12179
7/16-14 Head BoltTS14300TS121888

Universal Big-Sert Head Bolt Kits

KitKit Part NoInsert Part No
M10x1.5 Head BoltTS7580BSTS50155
M10x1.25 Head BoltTS6250BSTS50125
M11x1.5 Head BoltTS2200BSTSJ-42385-507BS
M11x1.25 Head BoltTS11125BSTS51125
M11x2.0 Head BoltTS3700BSTS37004
M12x1.25 Head BoltTS4700BSTS52125
M12x1.5 Head BoltTS4800BSTS52155
M12x1.75 Head BoltTS4900BSTS52175

Time-Sert Kits

  • Standard head bolt thread repair
  • First-time thread repair applications
  • Most common head bolt repair scenarios

Big-Sert Kits

  • Oversized holes from previous failed repairs
  • Severely damaged cylinder head threads
  • When standard repair methods won't work

Kit Contents

  • • Drill bit for hole preparation
  • • Special size tap for threading
  • • Counterbore tool
  • • Insert driver tool
  • • Time-Sert or Big-Sert inserts
  • • Detailed installation instructions

Important Notes

  • • Always use proper torque specifications
  • • Clean all metal chips from cylinder head
  • • Use cutting fluid when drilling and tapping
  • • Test fit with original head bolt before assembly
  • • Follow manufacturer's head bolt tightening sequence
  • • Consider head bolt stretch specifications

Common Applications

Automotive Engines

  • • Cylinder head repairs
  • • Engine block thread restoration
  • • Head gasket replacement prep
  • • Performance engine builds

Heavy Equipment

  • • Diesel engine repairs
  • • Construction equipment
  • • Agricultural machinery
  • • Marine engines

Industrial Applications

  • • Manufacturing equipment
  • • Power generation
  • • Compressor repairs
  • • Pump assemblies

Need Help Selecting the Right Kit?

Our technical team can help you determine the correct head bolt repair kit for your specific application. Contact us with your engine specifications and thread requirements.

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