Engines | Mounts, , (GOOD USED) 2003 Caterpillar C12 Diesel Engine (70PINECMCONNECTOR), TEST RUN WATCH VIDEO ON JJ REBUILDERS WEBSITE, Serial # MBL10611, AR # 229-4766, 11.9L, 380HP RATED @ 2100 RPM, MAX ADV 505HP @ 1800RPM, LOW MILE ENGINE. Visit JJREBUILDERS for more information on this engine or any other diesel engine. Call for more information 1-800-971-3019. INV # 004025