Engines | Mounts, , (GOOD USED/ RUN TESTED/ FULLY INSPECTED) Caterpillar 3406C Industrial Diesel Engine (WATER-AFTERCOOLED), Serial # 6TB65222, AR # 7C6843, 400HP, 3128 HOURS, TEST RUN WATCH VIDEO ON JJ REBUILDERS, Runs Perfect!!!! Visit JJREBUILDERS for more information on this engine or any other diesel engine you may be looking for. Call 786-377-5210 . REF INV # 005079