ARCO Yamaha 9.9-15HP Rectifier Voltage Regulator

The ARCO AR003 rectifier regulator is designed for selected Yamaha small four-stroke outboards. The supplier lists two-cylinder 15HP applications from 1998-2005, 9.9HP applications from 1998-2006, and earlier 9.9/15HP four-stroke engines from 1990-2006. The component combines charging-system rectification and regulation for the specified engines. Matching the original part number is the best way to confirm fitment across those overlapping year ranges.

Yamaha 6G8-81960-A1-00 is the replacement reference supplied for the AR003. That single OEM number gives the installer a clear cross-check when the engine model label or year is uncertain. Compare the connector layout, mounting, and wire colors with the removed regulator before connecting the replacement. Avoid forcing mismatched connectors, since similar Yamaha charging components can appear nearly identical.

Inspect the stator leads, battery connections, grounds, and regulator connector for corrosion or heat damage during service. Charging faults can come from poor connections as well as the regulator itself, so the surrounding circuit should be checked before the repair is considered complete. ARCO lists 12 months of materials-and-workmanship warranty coverage for leisure use and 90 days for commercial or racing applications. Verify the charging system with the applicable Yamaha test procedure after installation.

• Replaces Yamaha 6G8-81960-A1-00
• Combines rectifier and regulator functions for the specified charging system
• Application-specific plug-in replacement
• Intended for selected Yamaha small four-stroke outboards

For additional Yamaha charging regulators and alternator electrical parts, Browse more Alternator Parts & Accessories for related replacement and service components.