1989-1998 Cummins Heavy Duty Main Stud Kit (MSK5912)

If modifications and high horsepower are your main goal, especially upgrades like injectors or tuning, then you should consider upgrading to main studs! If your main bolts fail, you will often hear a loud knocking followed by power loss, as a start, this can also lead to catastrophic damage.

These studs hold the bottom end together clamping the crank in place, this provides you with increased stability, precise torque application, and effectively prevents distortion under high loads.

Part Number: MSK5912

• For 12V Engines Only (for 1998.5+ 24V engines, use MSK5924)
• Improved Strength over Factory
  
• More precise torque application
• Will not twist during tightening
• Clamps the crankshaft in place
• More consistent clamping force
• Increased stability and prevent distortion under high loads
  

• Click here for installation instructions
  

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  Will this main stud kit handle 650Hp?

  These are rated for high performance builds - up to ~700+ HP.