GM Duramax LML - Intercooler Pipe & Boot Kit (2011-2016)
GM Duramax LML - Intercooler Pipe & Boot Kit (2011-2016)
Eliminate airflow restrictions and unlock real performance gains with this Intercooler Pipe & Boot Kit for your 2011-2016 LML Duramax. The factory piping is full of sharp bends and narrow passages that choke airflow and raise EGTs—especially under load or boost. This upgraded kit features polished 3” aluminum piping and heavy-duty silicone boots that deliver smoother, cooler airflow and long-term durability, even under extreme conditions.
Key Features:
- Polished 3" Aluminum Piping: Smoother bends and larger diameter piping improve boost response and reduce restriction.
- Silicone Boots: Multi-layered, oil-resistant, and built to handle high heat and high boost without failing.
- Improved Performance: Increases airflow, reduces EGTs, and supports tuned or stock setups.
- Complete Hardware Kit: Includes everything needed for a clean, secure installation—no extra parts required.
Smoother Flow. Cooler Temps. More Power.
This kit fixes one of the most overlooked bottlenecks in your Duramax’s performance—the stock intercooler pipes. Whether you’re towing, daily driving, or running performance tunes, this upgrade delivers cooler intake temps, lower EGTs, and better throttle response. The polished aluminum finish also adds a sleek, high-performance look under the hood.
Compatibility:
- 2011-2016 GMC Sierra 2500HD/3500HD 6.6L Duramax LML
- 2011-2016 Chevy Silverado 2500HD/3500HD 6.6L Duramax LML
Built to Perform Under Pressure
If you want reliable boost delivery and consistent performance, this Intercooler Pipe & Boot Kit is a must. Designed to outflow the factory setup and withstand extreme engine bay conditions, it’s a smart upgrade that makes your LML breathe better—and run stronger.
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Important Notices
- Off‑Road Use Only
Products sold by JS Speed are intended for off‑road use and may be illegal on public roads where emissions or pollution‑control laws apply. - Check Local Laws
Before purchasing or installing, verify all applicable local, state/provincial, and federal regulations to ensure the modification is legal in your area. - Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.



