Sierra 18-99451 Voltage Regulator Rectifier for Mercury 4-Stroke Outboards

The Sierra 18-99451 voltage regulator rectifier is a premium aftermarket replacement for Mercury and Mariner 4-stroke outboard engines. This critical electrical component regulates voltage output from the charging system to prevent battery overcharging and ensure stable electrical system operation.

Key Features:

• Replaces Mercury OEM part number 881346T
• Designed for Mercury 75-115HP 4-stroke outboard motors
• Rectifies AC current from the stator to DC current for battery charging
• Regulates voltage to protect sensitive electrical components
• Meets or exceeds OEM specifications for reliable performance
• Direct fit replacement for easy installation

Sierra Marine is a trusted manufacturer of aftermarket marine engine parts, providing high-quality replacements at a fraction of OEM costs. This voltage regulator rectifier ensures your outboard's charging system operates efficiently, maintaining proper battery voltage and protecting your boat's electrical system from damaging voltage spikes.