NEW ALTERNATOR FITS 2001 2002 2003 2004 Chevrolet S10 Pickup 4.3 V6, GMC Jimmy Che. 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: 100 Amps Fan: Internal Regulator: Internal Pulley: Serpentine Grooves: 6 Source: Aftermarket