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Regulator Rectifier for Sea-Doo 720 & 800 GSX, GTX, SPX and XP 1995-1999

Regulator Rectifier for Sea-Doo 720 & 800 GSX, GTX, SPX and XP 1995-1999

SKU:RM30Y02

Regular price £55.20 GBP
Regular price £66.24 GBP Sale price £55.20 GBP
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Voltage Regulator Rectifier RM30Y02 for Sea-Doo

Sea-Doo 720 SP and 800 GSX, GTX, SP, SPX, XP and Challenger - 1995-1999

Brand new aftermarket voltage regulator rectifier, supplied as a direct replacement for the original unit fitted to Sea-Doo personal watercraft built between 1995 and 1999. It is a plug-and-play, direct fit part - no assembly is required and no modification to the standard wiring loom is needed. The unit is built with a higher grade of electrical components than the original and uses an improved heat sink for better thermal performance and charging capability. The quality exceeds the OEM equipment, and every unit is tested before it is shipped.

The regulator rectifier converts the alternating current produced by the stator into direct current and holds the charging voltage at a level that is safe for the battery and the rest of the electrical system. On a personal watercraft the unit works hard in a hot, damp engine bay, and when it fails the usual symptoms are a battery that will not hold charge between outings, a battery that boils or gasses, or a charging voltage that either never rises above resting battery voltage or climbs well past 15 volts. This unit delivers a minimum charging voltage of 14.5 V +/- 0.5 V and a maximum charging current of 25 A / 300 W, with open circuit voltage held below 15 V.

Key Features

  • Direct replacement for the original unit
  • Plug-and-play, direct fit, easy installation
  • No assembly required
  • Higher grade of electric components
  • Improved heat sink and charging capabilities
  • Quality exceeds the OEM equipment
  • All products shipped are tested
  • Four plugs, 4 pins

Technical Specs

Specification Detail
Part number RM30Y02
Width 45 mm
Length 55 mm
Height 22 mm
Wires length 93 mm
Fixation holes, centre to centre 60 mm
Number of plugs 4
Number of pins 4
Minimum charging voltage 14.5 V +/- 0.5 V
Maximum charging current 25 A / 300 W
Open circuit voltage Less than 15 V
Operating temperature -20 °C to 85 °C

Vehicle Fitment Guide

Years shown are the overall coverage span for this part. Please confirm against the OEM part number on your original unit before ordering.

Make & Model Years
Sea-Doo 720 SP 1995-1999
Sea-Doo 800 GSX 1995-1999
Sea-Doo 800 GTX 1995-1999
Sea-Doo 800 SP 1995-1999
Sea-Doo 800 SPX 1995-1999
Sea-Doo 800 XP 1995-1999
Sea-Doo Challenger 1995-1999

OEM Part Number Cross Reference

Aftermarket replacement. OEM part numbers are listed for reference only.

Part Number Manufacturer / Brand
278000443 Sea-Doo / Bombardier

Frequently Asked Questions

Do I need to modify the wiring to fit this unit?

No. This is a plug-and-play, direct fit replacement for the original unit and no assembly is required. It uses four plugs and 4 pins, matching the original connections.

What is supplied?

One brand new aftermarket voltage regulator rectifier, part number RM30Y02, tested before dispatch. No additional connectors or fitting hardware are listed with this part.

How do I tell whether my old regulator rectifier has failed?

Measure the voltage across the battery terminals with the engine running. A healthy charging system should show around 14.5 V. A reading that stays at resting battery voltage suggests the unit is no longer charging, while a reading above 15 V suggests it is no longer regulating and is overcharging the battery.

Will it fit the original mounting bracket?

Yes. The body measures 45 mm by 55 mm by 22 mm and the two fixation holes are 60 mm apart centre to centre, matching the original mounting. The wires are 93 mm long.

Dispatched from the UK · 12-month warranty · Fitment support from our technical team
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Shipping calculated at checkout. Free shipping over £150. Terms apply