2009 Mercedes OM 906 LA, School Bus, ECMs, Fits to: Thomas Built Saf-T-Liner HDX, (Used) 2009 Mercedes OM 906 LA, MCM- Serial Number: MBE0012585, Part Number: A0054462040, Engine: P-29001, 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# MBE0012585, Casting# MBE0012585, Truck Year 2009 1T7YN4A2491113939