Timing Cover 6.6L Duramax 2004-2005 Silverado Sierra 2500 3500 LLYCondition: REBUILDABLE CORE USED The GM 12624280 Front Engine Timing Cover is specifically designed for 6. 6L Duramax engines particularly from the 2011 2016 Chevrolet Silverado and GMC Sierra models. Engineered to protect the engines timing components this OEM part ensures precise timing and optimal performance adhering to rigorous standards set by General Motors. All parts industrially cleaned and inspected for cracks and damage before shipping Part