(GOOD USED/ RUN TESTED/ FULLY INSPECTED) 2004 Caterpillar C13 ACERT Diesel Engine (EPA04), Serial # KCB01036, AR # 242-7693, Family # 4CPXH0763EBK, Short Block Part # 10R7437, Long Block # 10R6464, 12.5L, Low Miles, TEST RUN WATCH VIDEO ON JJ REBUILDERS WEBSITE, Fully Inspected!, Perfect Runner! Visit JJ REBUILDERS for information on this engine or any other diesel engine you may be looking for . REF INV # 005489