2001 Caterpillar C15, Truck Tractor, Engine Assys, Fits to: Peterbilt 379, (Used) 2000 CATERPILLAR C15 ENGINE ASSEMBLY- Family Number: TBD, Displacement: 15.2L, Horsepower: 490, Ar. No.: 189-9583, Serial Number: 6NZ31969, 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 490, Serial# 6NZ31969, Casting# 6NZ31969 1XP5DB9X61N544253