1997 Caterpillar 3306, Engine Assys, (GOOD USED & TEST RUN & INTERNALLY INSPECTED) 1997 Caterpillar 3306 Diesel Engine For Sale, 3306 DI, 3306C, 300HP, MECHANICAL DIRECT INJECTION, AR# 1430822, BLOCK# 4P623, 10.5L, 6 CYLINDERS, Engine Serial# 9TL15224, Stock #7994