2004.5-2010 6.6L Duramax XR1 Series Turbocharger 64mm Fits: 2004.5-2010 6.6 Duramax Item Type: Duramax XR1 Series Turbocharger Brand: Industrial Injection Part Number: 848212-0001-XR1 This XR1 Series GT3788 Turbocharger comes with an upgraded Billet Blade Technology 64mm compressor wheel. The Billet Blade Technology 64mm compressor wheel is designed to increase turbo efficiency to help lower EGT's while adding strength and reliability. The increased compressor wheel size of the XR1 will help increase performance when running larger injectors and/or tuning where the factory sized turbo can no longer keep up. Features: 2004.5-2010 LLY/LBZ/LMM 6.6L Chevy new Garrett stock replacement turbocharger Upgraded with 64mm Billet Blade Technology compressor wheel Slim nose designed compressor wheel for increased wheel efficiency Helps Lower EGT's **LLY Requires 771864-0001 Adapter**   *Image is of the optional polished compressor cover