1989-1991 GMC R2500 Suburban V8 5.7L High Output Alternator Pulley:6-Rib Serpentine Pulley This is a direct fit

This is a direct fit high-output alternator for the 1968-1986 GMC C3500 5

This is a direct fit high-output alternator for the 1965-1969 Oldsmobile 442 6

This is pigtail harness will need to be wired into your factory wiring

This is a direct fit high-output alternator for the 1975-1980 Chevrolet C10 7

1989-1991 GMC R2500 Suburban V8 5.7L High Output Alternator Pulley:6-Rib Serpentine Pulley This is a direct fitFitment: This is a direct fit high output alternator for the 1989 1991 GMC R2500 Suburban 5. 7L. Being a direct fit, this alternator fits directly into your stock alternator location. Plug: This high output alternator comes with a 14. 8 Volt GM Style Internal Regulator with one wire connection. This alternator is not plug and play and must be wired with the one wire connection. NOTE: If you require charging at a certain voltage setpoint, we offer a