1990 GMC R3500 V8 7.4L 12si High Output Alternator JS Alternators available in multiple colors

available in multiple colors

This is a direct fit high-output alternator for the 2003-2005 Ford E-150 Club Wagon 4

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

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

then 2GA is plenty

1990 GMC R3500 V8 7.4L 12si High Output Alternator JS Alternators available in multiple colorsFitment: 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