The Industrial Injection 427402 PhatShaft 66 Turbo Kit is built to perform and will dramatically increase performance and reliability in your 2004.5-2010 GM 6.6L Duramax LLY/LBZ/LMM. The PhatShaft turbo kit utilizes the legendary Industrial Injection Silver Series Turbo. The Silver 66 is perfect for street performance trucks that tow light loads. Just like all the Silver Series Turbos, it comes standard with a 14 cm exhaust housing which Industrial Injection modifies the angle of the exhaust nozzle, maximizes the wastegate ports, and enlarges the wastegate chamber for full wastegate travel. Each turbo also features dual grooved high performance bearings and an adjustable boost elbow. Features: Lower EGT's Increased Reliability Increased Performance FMW Billet Compressor Wheel Mild To Aggressive Fueling Upgrades Recommended Note: Aftermarket tuning required for installation. Not available for sale in the state of California Click here to read Emissions Notice.