NEW ALTERNATOR FITS ALLIS CHALMERS TRACTOR 5045 5050 3-158 FIAT DIESEL 0-120-339-531 100% 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: 33 Amps Fan: External Regulator: Internal Source: Aftermarket