GMC Sierra 3500 HD Intercooler - Mishimoto - 11+ 6.6L Duramax LML - Silver - `11-`15. A direct-fit Mishimoto performance intercooler designed for 2011–2015 6.6L Duramax LML-equipped GMC Sierra 3500 HD trucks, built to improve charge-air cooling and support higher boost levels.

This Mishimoto intercooler uses a robust bar-and-plate core and cast-aluminum end tanks to increase cooling capacity and resist thermal stress under load. Compared to the factory cooler, it provides a substantially larger core volume and thicker core depth to reduce intake-air temperatures and help control exhaust gas temperatures (EGTs) during towing, hauling, or modified applications. The unit is designed to support both stock and modified trucks and is available in silver to match OEM engine-bay finishes. Mishimoto backs the intercooler with their signature Lifetime Warranty.

Features

• Bar-and-plate core — 73% thicker than factory for improved thermal transfer
• 101% increase in core volume vs. stock cooler
• Durable cast-aluminum end tanks for strength and longevity
• Designed to lower intake temperatures and aid in EGT management
• Direct-fit for 2011–2015 6.6L Duramax LML applications; Silver finish

If you have questions about fitment, performance, or installation, please 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. Call us at 512-982-9393 (TX) or 562-981-6800 (CA). If you are thinking about purchasing 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