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Voltage Regulator Rectifier for Yamaha Wave Runner 500 & Wave Jammer 500 1987-1993

Voltage Regulator Rectifier for Yamaha Wave Runner 500 & Wave Jammer 500 1987-1993

SKU:RM30921

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Voltage Regulator Rectifier for Yamaha Wave Runner 500 and Wave Jammer 500

Yamaha Wave Runner 500 and Wave Jammer 500, 1987-1993 - part number RM30921

This is a brand new aftermarket AC voltage regulator rectifier, supplied as a direct replacement for the original unit fitted to the Yamaha Wave Runner 500 and the Yamaha Wave Jammer 500 built between 1987 and 1993. It is plug-and-play and a direct fit, so installation is easy and no assembly is required.

A higher grade of electrical component is used throughout and the quality exceeds the OEM equipment. Every unit is tested before it is shipped. The unit is compact - 55 mm square and only 15 mm tall, with 55 mm between the fixation holes and four pins on four wires - so it drops into the original mounting position without the packaging or bracket changes that a larger replacement would force on you.

Key Features

  • Brand new aftermarket AC voltage regulator rectifier
  • Direct replacement to your original unit
  • Plug-and-play, direct fit, easy installation
  • No assembly required
  • Higher grade of electrical components
  • Quality exceeds the OEM equipment
  • Compact 55 mm square body with 55 mm fixation hole spacing
  • All products shipped are tested

Technical Specs

Specification Detail
Part number RM30921
Type AC voltage regulator rectifier
Width 55 mm
Length 55 mm
Height 15 mm
Fixation holes, centre to centre 55 mm
Number of pins 4
Number of wires 4
Minimum charging voltage 14.5 V +/- 0.5 V
Maximum charging current 50 A / 500 W
Open circuit voltage Less than 15 V
Operating temperature -20 to 85 degrees 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
Yamaha Wave Runner 500 1987-1993
Yamaha Wave Jammer 500 1987-1993

OEM Part Number Cross Reference

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

Part Number Manufacturer / Brand
6K8-81960-A0-00 Yamaha

Frequently Asked Questions

Does this fit without modification?

Yes. It is a direct replacement for the original unit, plug-and-play and a direct fit, with no assembly required. The fixation holes are 55 mm centre to centre and there are four pins on four wires, matching the original arrangement.

What is included?

The AC voltage regulator rectifier unit. No additional connector is listed for this part.

How do I know my old regulator has failed?

Measure the voltage across the battery with the engine running. Around 14.5 V is what a healthy system holds. A reading that never rises above resting battery voltage means the unit has stopped charging, and a reading above 15 V means it has stopped regulating and is overcharging the battery. On a craft that lives in a wet environment, corroded or green connector pins are a very common cause and worth checking at the same time.

Is this the right part for both the Wave Runner and the Wave Jammer?

Yes. RM30921 covers both the 500 Wave Runner and the 500 Wave Jammer over the 1987 to 1993 span. If your original unit carries Yamaha number 6K8-81960-A0-00, this is the correct replacement.

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