CATERPILLAR , (GOOD USED/ RUN TESTED/ FULLY INSPECTED) 1988 Caterpillar 3406B Diesel Engine, Serial # 4MG88678, AR # 7E2044, 425HP @ 2000RPM, TEST RUN WATCH VIDEO ON JJ REBUILDERS, Fully Inspected!!! Runs Perfect!!! Visit JJREBUILDERS for more information on this engine or any other diesel engine you may be looking for. Call . REF INV # 005125