NEW ALTERNATOR FITS 87 88 89 90 91 CHEVROLET CORVETTE 5.7 10463097 10463173 1101264 100% NEW and Made with the Highest Quality Components Available Full One Year Warranty Computer tested for consistent Quality and unsurpassed reliability Alternator - Voltage: 12V Amperage: 105 Amps Fan: External Regulator: Internal Pulley: Serpentine Grooves: 6 Source: Aftermarket