1977 Pontiac Firebird V8 5.0L 12si High Output Alternator Pulley:V-Belt Pulley We're nerds for specs and

We're nerds for specs and finer details around here

This is a direct fit high-output alternator for the 2020-2023 GMC Sierra 2500 HD 6

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This is a direct fit high-output alternator for the 1975-1976 Cadillac DeVille 8

1977 Pontiac Firebird V8 5.0L 12si High Output Alternator Pulley:V-Belt Pulley We're nerds for specs andFitment: This is a direct fit high output alternator for the 1977 Pontiac Firebird 5. 0L. 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