PDI Big Boss™ Cryo‑Treated Detroit 60 Series Head Bolt Kit

Available for: Detroit 60 Series 12.7L and 14L Engines

Key Benefits

• Maximum clamping force 
• Superior fatigue resistance
• Thermal Stability
• Corrosion Protection
• Ready-to-Install Kit

Warranty: 1 Year Unlimited Mile Warranty

Upgrade cylinder‑head integrity and lock in long‑term performance with PDI’s premium cryogenic‑treated head bolt kit. Engineered for heavy‑duty powerhouses that run harder and longer, every bolt is precision‑machined, deep‑frozen to –300 °F, and slowly tempered back to room temperature—relieving internal stresses and creating a denser, more uniform grain structure. The result? Rock‑solid clamp load you can trust, mile after mile.