NEW ALTERNATOR JOHN DEERE TRACTOR 4100 4110 YANMAR 20HP DIESEL 101211-2590, 101211-2591, 101211-2592 1012112590, 1012112591, 1012112592 129961-77200, 12996177200, 129961-77201 12996177201 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 Source: Aftermarket Replaces Part Numbers: 101211-2590 1012112590 129961-77200 12996177200 129961-77201 12996177201