Mishimoto has released a performance intercooler for the 2011 ChevroletGMC 6.6L Duramax LML. High intake and exhaust gas temperatures can reduce performance and potentially cause engine damage. Protect your investment by upgrading to the Mishimoto 6.6L Duramax LML intercooler. This Duramax intercooler is precision engineered with durable cast aluminum end tanks and an efficient bar - and - plate core, all designed for improved airflow, lower intake temperatures, and improved EGTs. The Mishimoto Duramax intercooler will support substantial boost pressure in your stock or highly modified truck. The Duramax LML intercooler features a 101 - percent increase in core volume and is 73 - percent thicker compared to the factory cooler. Offered in Sleek Silver or Stealth Black, the Mishimoto 6.6L Duramax intercooler is protected by our signature Lifetime Warranty.