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

The PDI Big Boss™ Cryo-Treated CAT 3406E / C15 / C16 Head Stud Kit is a premium performance hardware upgrade engineered to deliver maximum clamping force, durability, and reliability for Caterpillar heavy-duty diesel engines. Designed to outperform standard head bolts, this stud kit provides superior head gasket sealing and long-term stability under extreme cylinder pressures and high-horsepower applications.

Each Big Boss™ Head Stud undergoes a proprietary cryogenic treatment process, which realigns the metal’s molecular structure for greatly increased tensile strength, fatigue resistance, and dimensional stability. This advanced process ensures each stud maintains consistent torque and resists stretching under load—critical for maintaining head gasket integrity in performance and heavy-duty rebuilds.

Ideal for engine overhauls, performance tuning, or preventative upgrades, the PDI Big Boss™ Cryo-Treated Head Stud Kit provides unmatched reliability and sealing performance for CAT 3406E, C15, and C16 engines, ensuring long-lasting durability and confidence in demanding diesel environments.