1980 GMC C1500 equipped with 7.4L V8 Gas OHV, 6.6L V8 Gas OHV, 5.7L V8 Gas OHV, 5.7L V8 Diesel OHV, 5.0L V8 Gas OHV, 4.8L L6 Gas OHV, 4.1L L6 Gas OHV
1
For Alternators With Internal Regulator
1980 GMC C1500 equipped with 7.4L V8 Gas OHV, 6.6L V8 Gas OHV, 5.7L V8 Gas OHV, 5.7L V8 Diesel OHV, 5.0L V8 Gas OHV, 4.8L L6 Gas OHV, 4.1L L6 Gas OHV
For Alternators With Internal Regulator