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Voltage Regulator for Kawasaki KLT 200, KLT 250, KZ 250, KZ 440 & KZ 750 1980-1985

Voltage Regulator for Kawasaki KLT 200, KLT 250, KZ 250, KZ 440 & KZ 750 1980-1985

SKU:RMS020-102747

Regular price £41.10 GBP
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Voltage Regulator Rectifier for Kawasaki

KLT 200, KLT 250, KZ 250, KZ 440, KZ 650 and KZ 750 - 1980-1985

A brand new aftermarket voltage regulator rectifier, supplied as a direct replacement for the original unit on early 1980s Kawasaki machines. RMSTATOR describes it as plug and play, direct fit and easy to install, with no assembly required. It is built with a higher grade of electric components, the quality exceeds the OEM equipment, and all products shipped are tested. Part number RMS020-102747 replaces Kawasaki OEM 21066-1014 and covers the KLT 200, KLT 250, KZ 250, KZ 440, KZ 650 and KZ 750 from 1980 to 1985.

The regulator rectifier is the component that turns the alternating current coming out of the stator into usable direct current, and then holds the charging voltage at a safe level as engine speed rises. On machines of this age it is one of the most common causes of a flat battery, a battery that boils dry, or lights that blow repeatedly. This unit measures 69 mm long, 62 mm wide and 25 mm high, with fixing holes 55 mm apart centre to centre and wire lengths of 115 and 175 mm. It uses one plug with five pins across five wires, holds a minimum charging voltage of 14.5 V plus or minus 0.5 V, will pass up to 50 A or 500 W, keeps open circuit voltage below 15 V, and is rated to operate between -20 degrees C and 85 degrees C. RMSTATOR also includes the opposite connector on the main harness side, because after forty years those connectors are often melted, corroded or defective and are a major cause of repeat electrical faults.

Key Features

  • Brand new aftermarket voltage regulator rectifier
  • Direct replacement to your original unit
  • Plug and play, direct fit, easy installation
  • No assembly required
  • Higher grade of electric components
  • Quality exceeds the OEM equipment and all units are tested
  • Matching main harness side connector supplied in the box
  • Replaces Kawasaki OEM 21066-1014

Technical Specs

Specification Detail
Part number RMS020-102747
Length 69 mm
Width 62 mm
Height 25 mm
Wires length 115 and 175 mm
Fixation holes centre to centre 55 mm
Number of plugs 1
Number of pins 5
Number of wires 5
Minimum charging voltage 14.5 V +/- 0.5 V
Maximum charging current 50 A / 500 W
Open circuit voltage Below 15 V
Operation temperature -20 degrees C 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
Kawasaki KLT 200 1980-1985
Kawasaki KLT 250 1980-1985
Kawasaki KZ 250 1980-1985
Kawasaki KZ 440 1980-1985
Kawasaki KZ 650 1980-1985
Kawasaki KZ 750 1980-1985

OEM Part Number Cross Reference

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

Part Number Manufacturer / Brand
21066-1014 Kawasaki

Frequently Asked Questions

Will it fit without modification?

Yes. RMSTATOR supplies this unit as a plug and play, direct fit replacement with no assembly required. The single five pin plug and the 55 mm fixing centres match the original, so nothing needs to be cut or drilled. Confirm the number on your existing unit reads 21066-1014 before ordering.

What is included?

The voltage regulator rectifier plus the opposite connector for the main harness side. That extra connector is included because the original harness plug is very often melted, corroded or defective on machines of this age, and replacing only the regulator can leave the underlying fault in place.

How do I tell the old regulator has failed?

Measure the voltage at the battery with the engine running. A healthy system sits at around 14.5 V. If it stays at resting battery voltage the regulator is not charging, and if it climbs well beyond 15 V the regulator is no longer limiting output, which boils the battery and blows bulbs. Melted or discoloured connector pins point the same way.

Are the two different wire lengths normal?

Yes. This unit is specified with wire lengths of 115 mm and 175 mm, matching the original Kawasaki loom layout where the stator side and battery side leads leave the regulator at different lengths.

Dispatched from the UK · 12-month warranty · Fitment support from our technical team
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