ALTERNATOR FITS JOHN DEERE TRACTOR RA12N55-JD5 RA12N55-JD8 AR15009 AR40257 AR41592 AR42110 AR43632 AT27827 RA12N55-JD1 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: 55 Amps Fan: External Regulator: Internal Source: Aftermarket