Engines | Mounts, , 0 MACK E7, Engine ECM, (GOOD USED) MACK V-MACK DIESEL ENGINE ECM ECU CONTROL MODULE PART # 12MS51M3, MODEL # 6VC2108A05, PULLED OFF A 1992 MACK E7 SEMI-ELECTRONIC ENGINE, DATE CODE 920622, SERIAL # 1468509 ALL OUR ECMS ARE TESTED AND SHIP PRIORITY MAIL! CONTACT US FOR MORE INFORMATION! CALL (305)688-1101 OR EMAIL ONLINESALES@CATRUCKS.COM - CA TRUCK PARTS, INC.