Hocean-Max Voltage Regulator Rectifier for Sea-Doo 787/800 XP GSX GTX SPX (Replaces OEM 278000443) - Direct-Fit, Improved Heatsink

HOCEAN-Max Voltage Regulator Rectifier for Sea-Doo models 787/800 XP, GSX, GTX and SPX replaces OEM 278000443 to stabilize charging and protect your battery from over-voltage.

If you own a Sea-Doo 787 800 XP (1995–1996), GSX (1996), GTX (1996–1997) or SPX (1997–1999), this HOCEAN-Max replacement regulator-rectifier restores proper charging performance and reduces heat build-up in the electrical system. Designed as a direct-fit replacement for part numbers 278000443 and 278-000-443, the unit arrives fully tested and ready to install. It offers built-in overheat protection and an improved heatsink for more reliable dissipation of excess voltage and better battery life.

How does this regulator-rectifier improve charging on my Sea-Doo?

The device converts AC output from the stator into regulated DC and prevents excessive voltage from reaching the battery and electronics. Enhanced heatsink design helps lower component temperatures during operation, reducing thermal stress and the risk of charging faults.

• Converts alternator AC to stable DC for consistent charging.
• Overheat protection helps prevent thermal failure.
• Improved heat sink increases thermal dissipation efficiency.
• Direct replacement for OEM part numbers to ensure fit.

Will this unit fit my exact Sea-Doo year and model?

HOCEAN-Max lists compatibility with Sea-Doo 787/800 XP (1995–1996), GSX (1996), GTX (1996–1997) and SPX (1997–1999). Confirm the part number or compare the existing regulator-rectifier’s shape and connector layout to the product photos before ordering to ensure correct fitment.

• Compatible models: 787/800 XP, GSX, GTX, SPX—specific years indicated above.
• Replaces OEM numbers 278000443 and 278-000-443.
• Check connectors and mounting points against your original unit.
• Photos and part number verification recommended pre-purchase.

What are the build and quality assurances for this component?

This rectifier-regulator is brand new and each unit is quality-checked before shipping. The product includes design elements to improve longevity under marine conditions, and the seller provides a limited warranty to support after-sale reliability.

• 100% new replacement unit—no reconditioned parts.
• Quality control and electrical testing before shipment.
• 6-month limited warranty for trouble-free operation.
• Designed with overheat protection and upgraded heat dissipation.

How should I install and maintain the regulator-rectifier?

Installation typically involves unplugging the old unit, swapping the mounting hardware, and connecting the matched wiring harness. Keep connections clean and corrosion-free, and inspect the heatsink area for debris to maintain cooling performance.

• Match connectors and mounting points to original part before installation.
• Tighten mounting bolts to factory torque specs to ensure grounding.
• Clean electrical contacts and apply dielectric grease to prevent corrosion.
• Periodically check for secure wiring and clear airflow around the heatsink.

Who this is for: This HOCEAN-Max regulator-rectifier is aimed at Sea-Doo owners, DIY mechanics and marine service shops seeking a direct-fit replacement for aging or failed charging regulators on select 1995–1999 models. If you need to restore reliable charging, reduce heat-related failures, and replace an OEM 278000443 unit with a tested new part backed by a short warranty, this product is an appropriate choice.