Dayco Accessory Drive Belt Fan, Alternator and Air Pump For 1979 GMC K3500 5.7L

1979 GMC K3500 Engine: 5.7L V8;EngineVIN: L; Manual Transmission; w/o A.C.; Position: Fan, Alternator and Air Pump;. 1979 GMC K3500 Engine: 5.7L V8;EngineVIN: M; Manual Transmission; w/o A.C.; Position: Fan, Alternator and Air Pump;.