Upgrade and protect your charge-air system with the S&B Hot & Cold Side Intercooler Boot Kit designed for GM 6.6L Duramax LLY trucks. This complete replacement kit delivers lasting strength, improved reliability, and a secure boost seal where the factory boots are known to crack or fail.

Premium Construction for Long-Term Durability

• Includes four reinforced intercooler boots constructed with ultra-tough silicone and 4-ply aramid reinforcement for extreme heat and boost resistance. 
• Equipped with a full set of eight high-quality spring-loaded T-bolt clamps to ensure a tight, leak-free connection and superior performance under pressure. 
• Built in-house by S&B Filters for fitment accuracy and consistent quality you can trust.

Designed for Easy Installation

This complete boot kit replaces worn, cracked, or blown-out OEM intercooler boots with minimal tools required, making installation fast and straightforward. 

Features & Benefits

• Direct-fit replacement for factory intercooler hoses. No modifications needed. 
• Spring-loaded T-bolt clamps provide secure sealing and consistent tension. 
• 4-ply aramid reinforced boots deliver strength and longevity under heavy boost and heat.
• Backed by S&B’s lifetime warranty for peace of mind.

Vehicle Fitment

Fits 2500HD/3500 GM trucks equipped with the 6.6L Duramax LLY engine.

Whether replacing aging OEM boots or upgrading to a more durable aftermarket solution, this intercooler boot kit helps keep boost pressure where it belongs - improving performance, reliability, and longevity of your Duramax charge-air system.