2001 Sterling Truck Acterra 7500 Engine: 4.3L L4; Position: Fan, Alternator and Air Conditioning;. 2001 Sterling Truck Acterra 7500 Engine: 6.4L L6; Position: Fan, Alternator and Air Conditioning;. 2002 Sterling Truck Acterra 7500 Engine: 4.3L L4; Position: Fan, Alternator and Air Conditioning;.
