1983-1998 Cummins 3.9L 4BT Heavy Duty Main Stud Kit (MSK394BT)

Fits

If modifications and high horsepower are your main goal, then you're probably considering main studs! 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: MSK394BT

• 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
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