1997 Western Star 4900E Engine: 11.1L L6 DIESEL; Position: Fan;. 1997 Western Star 4900E Engine: 12.7L L6 DIESEL; Position: Fan;. 1998 Western Star 4900E Engine: 11.1L L6 DIESEL; Position: Fan;. 1998 Western Star 4900E Engine: 12.7L L6 DIESEL; Position: Fan;.
