278000123 Voltage Regulator for Sea-Doo SP 580 1990-1996

Voltage Regulator for Sea-Doo SP 580

This voltage regulator is a direct replacement component for the Sea-Doo SP 580, designed to keep charging voltage stable and protect the electrical system, and it cross-references OEM part number 278000123.

Overview

This voltage regulator serves the Sea-Doo SP 580 by controlling the charging output from the magneto so the battery stays properly fed and electrical components are protected. A failed regulator can leave you with a dead battery or erratic gauge behavior, so replacing it restores consistent voltage to the machine. It suits riders maintaining a 1990 to 1996 SP 580 and anyone chasing down charging faults.

Built For Performance

• Regulates charging voltage to protect the battery and electrical components
• Direct fitment for the Sea-Doo SP 580 charging system
• Cross-references OEM part number 278000123
• Solid-state construction with no moving parts to wear out
• Sealed body built to handle moisture and vibration in a marine engine bay
• Simple plug-in replacement for the original regulator

Fits These Machines

• for Sea-Doo SP 580, 1990
• for Sea-Doo SP 580, 1991
• for Sea-Doo SP 580, 1992
• for Sea-Doo SP 580, 1993
• for Sea-Doo SP 580, 1994
• for Sea-Doo SP 580, 1995
• for Sea-Doo SP 580, 1996

On-The-Job Use

• Restoring a personal watercraft that will not hold a battery charge
• Routine electrical maintenance on a 1990s Sea-Doo SP 580
• Diagnosing charging system faults on the water or in the shop
• Keeping lights and gauges working reliably on long rides

Specs At A Glance

Good To Know

Q: How do I know if my voltage regulator has failed? A: Common signs include a battery that keeps going flat, dim or flickering lights, and gauges that read strangely while the engine runs. Testing charging voltage at the battery with the engine running is the quickest way to confirm.

Q: Does this regulator need any modification to install? A: It is built as a direct replacement for the original unit on the listed Sea-Doo SP 580 models, so it mounts and connects the same way. Check your machine's serial number and existing part before ordering.

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