Voltage Regulator Rectifier For Mercury 75-90 HP 4 Stroke 804278A12, 804278T11

Voltage Regulator Rectifier for Mercury 75-90 HP 4 Stroke

This voltage regulator rectifier is a direct replacement for Mercury 75-90 HP 4-stroke outboards, with OEM cross-reference numbers 804278A12 and 804278T11.

Overview

This voltage regulator rectifier converts AC voltage from the stator to regulated DC voltage for charging the battery and powering electrical systems on Mercury 75-90 HP 4-stroke outboard engines. Designed for dependable performance in marine environments, this voltage regulator rectifier ensures consistent voltage output. It is a critical component for maintaining battery charge and electrical system health.

Built For Performance

• Solid-state circuitry for reliable regulation
• Sealed against moisture and corrosion
• Direct plug-in installation with factory connectors
• Built-in overvoltage protection
• Compact design fits in original mounting location

Fits These Machines

• for Mercury 75HP 4-Stroke outboard
• for Mercury 90HP 4-Stroke outboard
• for Mercury 4-stroke outboards equipped with 804278A12 or 804278T11

On-The-Job Use

• Replaces worn or failed regulators on Mercury outboards
• Used in saltwater and freshwater fishing boats
• Essential for keeping trolling motor batteries charged
• Common maintenance part for high-hour outboards

Specs At A Glance

Good To Know

Q: Will this regulator fit my Mercury 90HP 4-stroke? A: Yes, this regulator rectifier is designed for Mercury 75-90 HP 4-stroke outboards; confirm your engine's model and year for exact compatibility.

Q: Is installation difficult? A: Installation is straightforward with basic hand tools, and the unit plugs directly into the existing wiring harness without modification.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.