ARCO 12V 65A Alternator with Serpentine Pulley

Description

The ARCO 12V 65A Premium Replacement Alternator is designed for late-model MerCruiser applications using a 2-inch mounting foot and multi-groove serpentine pulley. It combines the correct marine mounting configuration, internal regulation, and included serpentine pulley in one replacement assembly, making it a practical option when the factory alternator has failed or is no longer maintaining proper charging voltage.

The alternator is internally regulated, so it does not require a separate external voltage regulator for standard replacement use. ARCO engineers its marine alternators for performance, reliability, precise fitment, and quality control, and each unit must meet or exceed OEM performance standards before packaging.

Listed replacement numbers include Mercury 807653T and Sierra 18-5960. Because MerCruiser charging systems can vary by engine generation and accessory drive, matching the original alternator part number and mounting arrangement before installation is recommended.

ARCO’s warranty covers properly installed products against defects in materials and workmanship for 12 months in leisure use and 90 days in commercial or racing service. Registering an eligible ARCO rotating-electric product within 30 days can add another year of warranty coverage. For late-model MerCruiser engines requiring a 65A internally regulated replacement with a 2-inch foot and serpentine drive, this unit provides a ready-to-install marine solution. Browse more marine alternators.