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Voltage Regulator for Kawasaki KFX 400 450 R, KX 250 450 F & Suzuki Quadsport 400 1999-2019

Voltage Regulator for Kawasaki KFX 400 450 R, KX 250 450 F & Suzuki Quadsport 400 1999-2019

SKU:RM30425

Regular price £105.90 GBP
Regular price £127.08 GBP Sale price £105.90 GBP
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Voltage Regulator Rectifier for Kawasaki KFX and KX, Suzuki Quadsport and Arctic Cat DVX

Kawasaki KFX 400 and 450 R, KX 250 F and 450 F, Suzuki Quadsport 400 and VanVan, Arctic Cat DVX 400, 1999-2019 - Part Number RM30425

A brand new aftermarket voltage regulator rectifier covering a family of closely related Kawasaki, Suzuki and Arctic Cat machines built between 1999 and 2019. It is a direct replacement to your original unit: one plug with six pins, a compact 76 by 47 by 27 mm finned body and 58 mm centre to centre fixation holes, so it bolts into the existing bracket and plugs into the existing loom.

The regulator rectifier converts the alternating current produced by the stator into direct current and caps the charging voltage so the battery and the electronics behind it are not cooked. This unit uses a higher grade of electric components than the original, and the quality exceeds the OEM equipment. Installation is plug-and-play, a direct fit, with no assembly required, and all products shipped are tested before they leave the warehouse.

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
  • Rated at 35 A / 400 W maximum charging current
  • All products shipped are tested

Technical Specs

Specification Detail
Part Number RM30425
Width 76 mm
Length 47 mm
Height 27 mm
Fixation Holes, Centre to Centre 58 mm
Number of Plugs 1
Number of Pins 6
Minimum Charging Voltage 14.5 V +/- 0.5 V
Maximum Charging Current 35 A / 400 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
Kawasaki KFX 400 1999-2019
Kawasaki KFX 450 R 1999-2019
Kawasaki KX 250 F 1999-2019
Kawasaki KX 450 F 1999-2019
Suzuki Quadsport 400 1999-2019
Suzuki VanVan 1999-2019
Arctic Cat DVX 400 1999-2019

OEM Part Number Cross Reference

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

Part Number Manufacturer / Brand
21066-0042 Kawasaki
21066-0017 Kawasaki
21066-S004 Kawasaki
21066-S011 Kawasaki
32800-05F20 Suzuki
32800-05F10 Suzuki
3409-027 Arctic Cat
3409-046 Arctic Cat

Frequently Asked Questions

Does it fit without modification?

Yes. It is a direct replacement to your original unit - plug-and-play, direct fit, easy installation, with no assembly required. The single six-pin plug and the 58 mm centre to centre mounting holes match the original.

What is in the box?

One brand new aftermarket voltage regulator rectifier, tested before dispatch. No separate hardware is required beyond the original mounting bolts.

How do I know the old one has failed?

Check the voltage at the battery with the engine running: it should settle around 14.5 V. A battery that stays flat, or one that gases because voltage is climbing past 15 V, both point at the regulator. Melted or discoloured connector pins on the regulator plug are another common sign on these machines.

Why do Kawasaki, Suzuki and Arctic Cat machines share this part?

The KFX 400, the Suzuki Quadsport 400 and the Arctic Cat DVX 400 are closely related machines, and Kawasaki, Suzuki and Arctic Cat each list their own number for the same regulator. All of those numbers are shown in the cross reference table above - match the number on your original unit to confirm.

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