Caterpillar 3406B, Engine Assys, 1989 Caterpillar 3406B Diesel Engine with Engine Brakes, AIR TO AIR, Mechanical Fuel Pump, AR# 9Y-2558, 4MG50707, Ford Application, 425HP @ 2100RPM, 8N-9267, 4W-2436, 7W-2203, 14.6L ,6 Cylinders, Engine Serial # 4MG50707, Stock # 10250