1990 GMC R3500 V8 7.4L 12si High Output Alternator JS Alternators then 2GA is plenty

then 2GA is plenty

available in multiple colors

This is a direct fit high-output alternator for the 1990-1992 Ford Bronco 5

This Universal Big 3 Wiring Upgrade Kit includes a 20 Foot 2/0 Positive Cable

This is a direct fit high-output alternator for the 1977-1986 Chevrolet K30 7

1990 GMC R3500 V8 7.4L 12si High Output Alternator JS Alternators then 2GA is plentyFitment: This is a direct fit high output alternator for the 1990 GMC R3500 7. 4L. 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