2 0 GM/Chev (HD) 6.6L Engine Core Contact for price (Core) GM/Chev (HD) 6.6L, ENGINE ASSEMBLY- Family Number: 6GMXH06.6591, Displacement: 6.6L, Horsepower: 300, E.C.S: CAC, TC, DFI, OC, EGR, Reference images for condition, For more... ConditionUsedHorse Power300 HPPart Number6GMXH06.6591Stock NumberP-99268 MLS Number13486338CategoryEngine Cores Last Updated3/29/2025 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info