2011 Detroit Other, School Bus, Engine Assys, Fits to: Western Star 4900EX, (Used) 2010 DETROIT DIESEL SERIES 60, ENGINE ASSEMBLY- Displacement: 12.7L, Horsepower: 500, ESN: 06RE126998, DDEC IV, 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 500, Serial# 06RE126998, Casting# 06RE126998 5KKXACCG6BPBB4095