(Used) 2000 MACK E7 ENGINE ECM - Part Number: 0-281-001-552, Serial Number: 12MS517BM, 000519, 28RTE760, 08519, 6941-4111, Family Number: YMKXH11.9H56 Displacement: 11.9L Horsepower: 310 CPL: N/A ESN: OM3636 ECS: SPL Engine: P-40319, For more information about this item, give us a call. We ship worldwide! ( CRG HEAVY TRUCK PARTS ) 929 W PULASKI HWY ELKTON, MD 21921