2001 Mack E7, Truck Delivery, Engine Assys, Fits to: Mack RD688S, (Used) 2000 Mack E7, ENGINE ASSEMBLY- Displacement: 11.9L, Horsepower: 350, Serial Number: 0D4183, Family Number: YMKXH11.9H56, ECS: SPL, 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 350, Serial# 0D4183, Casting# 0D4183 1M2P267C61M055778