NEW 12 VOLT 50 AMP ALTERNATOR FITS MERCURY MARINER OUTBOARD 200 225 DFI 828506 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: 50 Amps Fan: Internal Regulator: Internal Pulley: Serpentine Grooves: 4 Source: Aftermarket