PDI Big Boss™ Cryo‑Treated CAT 3406E/C15/C16 Head Bolt Kit

The PDI Big Boss™ Cryo-Treated CAT 3406E / C15 / C16 Head Bolt Kit is engineered for maximum strength, precision, and reliability in heavy-duty Caterpillar engines. Designed to handle extreme combustion pressures and high-horsepower applications, this premium kit ensures a secure and uniform cylinder-head seal for long-term durability and consistent performance.

Each Big Boss™ Head Bolt undergoes an advanced cryogenic treatment process that realigns the molecular structure of the metal—greatly enhancing tensile strength, fatigue resistance, and dimensional stability. The result is a bolt that resists stretching, maintains proper clamping force, and outperforms conventional hardware under the harshest operating conditions.

Ideal for engine rebuilds, high-performance builds, and preventative maintenance, the PDI Big Boss™ Cryo-Treated Head Bolt Kit provides unmatched reliability and sealing integrity, ensuring your CAT 3406E, C15, or C16 engine operates at peak performance mile after mile.