Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
Upgrade your LB7 Duramax with the Mammoth Performance Heavy Duty Silicone Intercooler Boot Kit—engineered to outperform and outlast the factory rubber boots that crack, split, and blow off under boost.
Built to Handle the Heat and the Boost
The OEM intercooler boots on your 2002-2004 6.6L Duramax LB7 weren't designed for the demands of a tuned or hard-working truck. Over time, heat cycling and turbo pressure cause the stock boots to deteriorate, leading to boost leaks, lost power, and reduced fuel economy. Our multi-ply silicone boots are reinforced with high-strength polyester fabric to deliver superior durability and consistent sealing—mile after mile.
Why Choose Mammoth Performance Silicone Boots
Multi-Ply Silicone Construction – Reinforced layers withstand extreme heat, pressure, and vibration far better than factory rubber
Maintains Boost Pressure – Eliminates boost leaks for stronger throttle response, better towing performance, and improved fuel efficiency
Temperature Resistant – Engineered to handle the high under-hood temperatures of the Duramax diesel
Direct OEM Replacement – Designed for a precise, factory-style fit with no modifications required
Available in Multiple Colors – Add a clean, custom look to your engine bay
Fitment
This kit is specifically designed for:
2002-2004 Chevrolet/GMC 6.6L Duramax LB7
What's Included
Complete set of reinforced silicone intercooler boots
Stainless steel T-bolt clamps for a secure, leak-free seal
Upgrade With Confidence
Whether you're towing heavy, running a tune, or just want to replace tired factory boots with a permanent upgrade, the Mammoth Performance Silicone Intercooler Boot Kit is the reliable, long-lasting solution your LB7 deserves.
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
