GMC Sierra 2500 HD Intercooler Pipe and Boot Kit - Mishimoto 6.6L Duramax ('11–'15). This polished intercooler pipe and boot kit replaces restrictive factory plumbing with mandrel-bent aluminum pipes, silicone boots, and constant-tension T-bolt clamps for a durable, direct-fit upgrade.

Designed for owners who want improved airflow and more consistent charge temperatures, this Mishimoto kit reduces flow restrictions found in the stock setup. The larger-diameter cold-side and hot-side pipes smooth airflow to the intercooler and turbo, which can contribute to improved power delivery and lower exhaust gas temperatures when paired with supporting modifications. The kit uses Mishimoto DuraCore silicone boots for added resistance to heat, pressure, fuel, and oil, and includes constant-tension T-bolt clamps for reliable sealing. Finished in polished aluminum, the pipes are mandrel-bent for unrestricted flow and are made in the USA with Mishimoto’s lifetime warranty.

Features

• Polished mandrel-bent aluminum pipes
• Includes hot-side (3.0") and cold-side (3.5") pipes, silicone boots, and T-bolt clamps
• Mishimoto DuraCore silicone for improved durability against heat, fuel, and oil
• Direct bolt-on fit for 6.6L Duramax 2011–2015 applications
• Made in the USA with Mishimoto lifetime warranty

If you have questions or want help confirming fitment for your truck, call us directly — we’re happy to help. We offer installation and customization services at our two locations in Austin, Texas and the Los Angeles, California area: 512-982-9393 (TX) and 562-981-6800 (CA). We install on premises at both locations. If you’re thinking about purchasing multiple items, contact us for potential shipping discounts.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov