2009 Mercedes OM904LA, School Bus, ECMs, Fits to: Thomas Built Saf-T-Liner HDX, (Used) 2008 Mercedes OM926LA, ECM- Serial Number: MBE0012584, Part Number: A0054462040, Family Number: 8DDXH07.2DJC, Displacement: 7.2L, Horsepower: 178, ESN: 9269261950012584, Engine: P-31039, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Serial# MBE0012584, Casting# MBE0012584, Truck Year 2009 1T7YN4A2291113955