
The Gates Micro-V V-ribbed belt for 2008–2011 Mack GU Series with MP8 diesel engines is specified as a Heavy Duty belt for fan and water pump duties. Listed in the catalog for the named Mack GU MP8 applications across those years, the Heavy Duty V-ribbed belt is the listed replacement for the fan and water pump drive functions on those models.
Gates 08-11 Mack GU Series Mack MP8 Diesel Fan & Water Pump Heavy Duty V-Ribbed Belt