Core Engine. Water pump mounting hole broke on Block. Will need to be repaired. Needs a new water pump as well. Mack E7-400. ESN 1C2990. 11GBA# 5984YP1. FED/CAL # 1MKXH11.9H56 ECM 12ms517m 141,438.40 miles and 32,009.90 Hours. Is a good runner, just needs water pump and block fixed where waterpump mounts.