The LB7 was the first Duramax to hit American roads -- and the first to expose the factory rubber intercooler boot problem. Over 20 years of heat cycling, oil vapor from the vent tube, and sustained boost pressure turn the OEM rubber boots into a ticking clock. They swell. They crack. They blow off at the worst possible moment. This 5-Ply Silicone CAC Intercooler Boot Kit replaces every rubber charge air hose with heavy-duty 5-ply silicone that holds boost and holds shape.

Key Points:

• 5-ply reinforced silicone, heavier-duty than standard 3 or 4-ply
• Oil-resistant inner liner, internal fabric ply prevents ballooning
• Full kit replaces all factory rubber CAC boots and intercooler connectors
• Direct OEM fitment, factory clamp positions, no trimming
• Handles stock and tuned boost levels on the first-gen Duramax