(GOOD USED/ RUN TESTED/ FULLY INSPECTED) 1996 Caterpillar 3406E Diesel Engine (40PIN), Serial # 5EK75226, AR # 134-1628, 550 HP @ 1800 RPM, 14.6L, Long Block # 0R7961, Short Block # 0R8323, TEST RUN WATCH VIDEO ON JJ REBUILDERS WEBSITE!!, Fully Inspected!!! Runs Perfect!!! LOW MILES, Visit JJREBUILDERS for more information on this engine or any other diesel engine you may be looking for. Call 786-377-5210 REF INV # 005723