GMC Sierra 2500 HD Intercooler Pipe and Boot Kit - Cold-Side - Mishimoto - DuraCore Technology - Polished - `11-`15 is a direct-fit cold-side upgrade for 6.6L Duramax trucks. This kit replaces the factory plastic pipe and boot with durable aluminum and high-performance silicone components.

The Mishimoto cold-side pipe is constructed from 3.5" mandrel-bent aluminum with a polished finish and a two-piece design for easier installation and removal. A CNC-machined AIT sensor bung lets you retain the factory air intake temperature sensor. The straighter, larger-diameter pipe reduces restrictive bends found in the OEM plumbing, improving airflow and helping lower EGTs. Included Mishimoto silicone boots use DuraCore technology for superior resistance to heat, pressure, fuel, and oil, reducing the chance of leaks or blowouts. Constant-tension T-bolt clamps are provided to maintain consistent holding power under boost. This kit is made in the USA and is backed by Mishimoto’s lifetime warranty.

Features

• 3.5" mandrel-bent polished aluminum cold-side pipe (two-piece)
• CNC-machined AIT sensor bung to retain factory sensor
• Mishimoto DuraCore silicone boots for improved durability
• Constant-tension T-bolt clamps for reliable clamping force
• Designed for 6.6L Duramax 2011–2015 applications (fits GMC Sierra 2500 HD)
• Made in USA with Mishimoto lifetime warranty

If you have questions or want help confirming fitment or options, call us directly — we’re happy to help. We offer installation and customization services at two locations: Austin, Texas and the Los Angeles, California area. 512-982-9393 (TX) and 562-981-6800 (CA).

If you’re considering multiple items, contact us for shipping discounts. We install on premises at both locations.

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