(Used) 2006 Caterpillar C13, ENGINE ECM- Part Number: 256-1159-01, Serial Number: 30166255JJ, NUUUNL, Engine Information- Serial Number: KCB88406, Part Number: 3502763, Family Number: 6CPXH0763EBK, Displacement: 12.5, Horsepower: 335-525 2 Rectangular Plugs with 70 Pins each, Reference images for condition. For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921