
The Gates Micro-V V-ribbed belt for 1999–2004 Sterling L-Line models with Caterpillar C12 diesel engines is listed as a heavy-duty fan drive belt. It supplies V-ribbed drive intended for fan accessory applications on those Sterling trucks, reflecting the heavy-duty classification in the description and offered as the correct service belt for the given years and engine type.
Gates 99-04 Sterling L-Line Caterpillar C12 Diesel Fan Heavy Duty V-Ribbed Belt