John Deere 4276DF Engine

John Deere 4276 diesel engine, DF01 industrial spec, naturally aspirated, mechanical fuel system, block casting # R73657, power unit w/ enclosure & Rockford PTO clutch. Engine runs fine on starting fluid, injection pump is NOT WORKING and needs to be replaced or rebuilt. SERIAL TAG IS MISSING, ENGINE IS A 4276DF, COMES COMPLETE AS PICTURED. ENGINE WILL INTERCHANGE W/ MANY EARLY CONSTRUCTION SPECS INCLUDING 450 SERIES DOZERS AND OTHERS. COMES W/ POWER TAKE OFF AND ACCESSORIES.