Freightliner Classic Engines / Uncategorized / By mark Caterpillar 3176 Caterpillar 3406 Caterpillar C-10 Caterpillar C-12 Caterpillar C-15 Cummins ISM Cummins ISX Cummins L-10 Cummins MII Cummins N14 DD 60 Series Mercedes MBE 4000