(GOOD USED/ RUN TESTED/ FULLY INSPECTED) 2006 Caterpillar C15 ACERT Diesel Engine (TWIN TURBO), Serial # NXS22278, AR # 261-5479, Fam # 6CPXH0928EBK, 475HP RATED, 550HP Max Rating, Long Block # 10R4412/ 20R9106, Short Block # 10R4404, TEST RUN WATCH VIDEO ON JJREBUILDERS, Fully Inspected! Perfect Runner!! Visit JJREBUILDERS for information on this engine or any other diesel engine you may be looking for. Call 786-377-5210 for more information. REF INV # 005292