12 Volt Alternator for Tractors Direct Replacement Unit Key benefits Reliable charging performance for agricultural equipment that requires a 12 volt charging system. Maintains battery charge while operating lights, pumps, and other electrical accessories. output supports heavy electrical loads with 105 amperes of charging capacity, reducing the risk of undercharging during demanding work cycles. Builtin 14.6 volt regulation ensures consistent charging voltage for proper battery maintenance and stable electrical system operation. Internal regulator simplifies installation and wiring by eliminating the need for an external regulator. External fan cooling helps maintain operating temperature under sustained loads, improving performance in long or intensive tasks. Directfit design with J180 mount and 1/428 B plus terminal for straightforward replacement and minimal downtime. Negative polarity matches standard tractor grounding systems for plugandplay compatibility where that polarity is required. Key specifications Voltage: 12 Volt Regulation setpoint: 14.6 Volt Output current: 105 Amperes B plus terminal: 1/428 thread Cooling: External fan Mount type: J180MOUNT Polarity: Negative Regulator: Internal regulator Who this alternator is for Owners or technicians who need a direct replacement alternator for tractors or equipment that specify a 12 volt, 105 amp alternator with J180 mounting and negative ground. Fleets and maintenance shops that require a readytoinstall unit with an internal regulator to simplify repairs and reduce parts on hand. Practical use scenarios a failed alternator on a compact tractor used for mowing and light towing so battery charge is maintained while powering lights and a trailer brake controller. Install as an upgraded replacement for a utility tractor that now runs additional aftermarket lights and a hydraulic pump, providing the higher 105 amp output needed for reliable operation. Keep as a spare unit for seasonal equipment used in harvesting or baling to minimize equipment downtime during peak work periods. Installation notes Designed for tractors with negative ground electrical systems that accept a J180 mount and 1/428 B plus terminal. Basic mechanical and electrical skills are required for removal and installation. Verify compatibility with your tractor model and battery system before . Regular inspection of electrical connections and cooling passages helps maintain performance over time. This alternator provides a straightforward, specificationmatched replacement for tractors and similar equipment that require a 12 volt, 105 amp alternator with 14.6 volt regulation, 1/428 B plus terminal, external fan cooling, J180 mounting, negative polarity, and an internal regulator.