Engines | Mounts, , 1990 MACK E6, Truck Engine, (GOOD USED 1990 MACK E6 DIESEL ENGINE, 4 VALVE, 350HP @ 1750RPM, 11GBA# 582988, MECHANICAL FUEL PUMP, 672 DISPLACEMENT, 6 CYLINDERS, CASTING/SERIAL# 5486P480545372, STOCK #3228 WATCH TEST RUN VIDEO ON CA TRUCKS WEBSITE! TEST RUN & INSPECTED INTERNALLY! WARRANTY! CALL CA TRUCK PARTS FOR MORE INFORMATION (305)688-1101