1987-1988 Chevrolet R30 L6 4.8L 12si High Output Alternator Pulley:Double V-Belt Pulley This is a direct fit

This is a direct fit high-output alternator for the 1988-1990 Cadillac Fleetwood 4

This is a direct fit high-output alternator for the 1973-1977 Chevrolet Malibu 4

(or 58mm for V Belt) pulley and will require installing a 1/2 inch - 1 inch shorter belt

This is a direct fit high-output alternator for the 1967 Chevrolet Chevy II 4

1987-1988 Chevrolet R30 L6 4.8L 12si High Output Alternator Pulley:Double V-Belt Pulley This is a direct fitFitment: This is a direct fit high output alternator for the 1987 1988 Chevrolet R30 4. 8L. 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