2004 Mercedes OM906LA, School Bus, Engine Assys, Fits to: Thomas Built Saf-T-Liner HDX, (Used) 2003 Mercedes OM906LA, ENGINE ASSEMBLY- Family Number: 3MBXH6.37DJA, Displacement: 6.4L, Horsepower: 300, E.C.S.: TC, ECM, CAC, EGR, 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 300, Serial# TBD, Truck Year 2004 1T7YN4B2941143252