Arco Starting & Charging 60121 High-Amp Alternator 12V 105A

The Arco Starting & Charging 60121 is a high-output 12-volt alternator designed to deliver reliable 105-amp charging performance for marine and automotive applications. This alternator features a self-exciting integral voltage regulator that eliminates the need for external excitation, simplifying installation and improving reliability.

Key Features:

• 12-volt system with 105-amp output for high-demand electrical systems
• Self-exciting integral voltage regulator for simplified wiring
• Isolated ground design reduces electrical interference and improves safety
• Tachometer terminal included for easy RPM signal connection
• External voltage adjustment capability for fine-tuning charging voltage
• Single groove pulley for standard belt applications

This alternator is ideal for vessels and vehicles with high electrical loads, including navigation equipment, communication systems, and onboard accessories. The isolated ground configuration provides enhanced electrical system protection, while the included tachometer terminal allows for convenient engine RPM monitoring without additional adapters.