Black Mini Alternator ES1004BK with V-belt Pulley Fits for Denso Style 12 Volts Systems 19680420OEM Part Number ES1004BK Fit For the Following Models Compatible with 12 volt systems. It has a internal voltage regulator and comes with the V belt pulley. This is a perfect choice for street rods, hot rods or race application where space is limited and a smaller alternator is preferred. Alternator Case Style: Denso Amperage Output: 70 Max Amps Voltage Capacity: 12 Volt One Wire Capable: Yes Pulley Included: Yes Pulley Style: V Belt Regulator