Arco Starting & Charging – Arco Mercury Outboard Alternator – 20850

The Arco 20850 is a direct-replacement alternator for Mercury outboard engines, engineered to meet or exceed OEM charging output. Built with ARCO’s 60-plus years of marine electrical expertise, every unit is performance-tested before shipment for fitment accuracy and reliable output. Covered by ARCO’s 12-month Assurance Warranty for leisure use.