PDI Big Boss™ Cryo‑Treated Cummins N14 Head Bolt Kit

The PDI Big Boss™ Cryo-Treated Cummins N14 Head Bolt Kit is a premium performance upgrade engineered to provide exceptional clamping strength, reliability, and sealing integrity for Cummins N14 diesel engines. Designed to withstand the extreme combustion pressures and thermal cycles of heavy-duty and performance applications, this kit ensures a secure cylinder-head seal for long-term durability and consistent performance.

Each Big Boss™ Head Bolt undergoes an advanced cryogenic treatment process, which realigns the molecular structure of the metal for greatly improved tensile strength, fatigue resistance, and dimensional stability. This process reduces bolt stretch and maintains consistent torque, ensuring optimal head gasket sealing even under the harshest engine loads.

Ideal for engine rebuilds, upgrades, or preventative maintenance, the PDI Big Boss™ Cryo-Treated Cummins N14 Head Bolt Kit delivers industry-leading strength and reliability—trusted by professional diesel technicians and fleets that demand the highest performance from their Cummins engines.