Gates Accessory Drive Belt Fan and Alternator For 1975-1978 GMC P25 4.8L L6 GAS

1975 GMC P25 Engine: 4.8L L6 GAS; W/O A.C.; Position: Fan and Alternator;. 1976 GMC P25 Engine: 4.8L L6 GAS; W/O A.C.; Position: Fan and Alternator;. 1977 GMC P25 Engine: 4.8L L6 GAS; W/O A.C.; With Standard Cool.; Position: Fan and Alternator;.