2006 Mack E7, Truck Tractor, Engine Assys, Fits to: Mack CXN612, (Used) 2009 Mack E7, ENGINE ASSEMBLY- REMANUFACTURED- Displacement: 12.1L, Horsepower: 360, Serial Number: BRE9421, Part Number: 86SB3542, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Horse Power 360, Serial# BRE9421, Casting# BRE9421 1M1AK02YX6N004036