NEW 12V 70 AMP ALTERNATOR FITS PERKINS MARINE ENGINE DOUBLE BOTTOM 1-V 9AR2958P 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: 70 Amps Fan: External Regulator: Internal Pulley: V Belt Grooves: 1 Source: Aftermarket