1987-1989 GMC R2500 V8 5.7L 12si High Output Alternator JS Alternators This is a direct fit

This is a direct fit high-output alternator for the 1998-2004 Toyota Avalon 3

This is a direct fit high-output alternator for the 1967 Chevrolet G10 Van 4

This is a direct fit high-output alternator for the 2018-2020 Volkswagen Atlas 3

This is a direct fit high-output alternator for the 1974-1976 GMC Sprint 6

This is a direct fit high-output alternator aftermarket replacement for 2013-2015 BMW X1 3

1987-1989 GMC R2500 V8 5.7L 12si High Output Alternator JS Alternators This is a direct fitFitment: This is a direct fit high output alternator for the 1987 1989 GMC R2500 5. 7L. 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