1974-1978 GMC G25 L6 4.8L 12si High Output Alternator Pulley:V-Belt Pulley This is a direct fit

This is a direct fit high-output alternator for the 1989 Chevrolet V3500 5

This is a direct fit high-output alternator for the 1973-1974 Buick Century 7

This is a direct fit high-output alternator for the 1968-1969 Chevrolet K10 Pickup 6

This is a direct fit high-output alternator for the 1968-1980 GMC C1500 Suburban 4

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1974-1978 GMC G25 L6 4.8L 12si High Output Alternator Pulley:V-Belt Pulley This is a direct fitFitment: This is a direct fit high output alternator for the 1974 1978 GMC G25 4. 8L. Being a direct fit, this alternator fits directly into your stock alternator location. Plug: This high output alternator comes with a separate adaptor plug. One side will plug directly into the aftermarket high output alternator, and the other side will plug into the factory plug. NOTE: If you require charging at a certain voltage setpoint, we offer a selection of