2000 Freightliner FL80 Engine: 6.4L L6 DIESEL; Position: Hub, Fan, Alternator and Air Conditioning;. 2001 Freightliner FL80 Engine: 6.4L L6 DIESEL; Position: Fan, Alternator and Air Conditioning;. 2002 Freightliner FL80 Engine: 6.4L L6 DIESEL; Position: Fan;.