1990 Caterpillar 3406, Truck Tractor, Engine Assys, Fits to: Peterbilt 379, (Used) 1989 Caterpillar 3406, ENGINE ASSEMBLY- Displacement: 14.6L, Horsepower: 425, 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 425, Serial# TBD, Truck Year 1990 1XP5DB9X8LN282500