Voltage Regulator for Suzuki GS 250-650 & GSX Katana 750-1100 1977-1983
Voltage Regulator for Suzuki GS 250-650 & GSX Katana 750-1100 1977-1983
SKU:RM30302
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Voltage Regulator Rectifier for Suzuki GS & GSX Katana
Suzuki GS 250, 425, 450, 550, 650 and GSX Katana 750, 850, 1000, 1100 - 1977-1983
This is a brand new aftermarket voltage regulator rectifier, supplied as a direct replacement for the original unit fitted to Suzuki GS and GSX Katana models. It is a plug-and-play, direct fit part, so installation is straightforward and no modification to the loom or the mounting bracket is required. The unit carries part number RM30302 and arrives ready to fit, with five wires terminating in five plugs on five pins, matching the original Suzuki arrangement.
The regulator holds a minimum charging voltage of 13V +/- 0.5V and will handle a maximum charging current of 25 A, equivalent to 300 W, with an open circuit voltage below 15 V. It is rated for continuous operation between -20 degrees C and 85 degrees C, so it copes with cold winter starts as well as sustained summer running. The body measures 75 mm long by 48 mm wide by 25 mm high, the two fixing holes sit 52 mm apart centre to centre, and the wiring tail is 300 mm long. Check these dimensions against the unit you are removing before ordering.
Key Features
- Brand new aftermarket voltage regulator rectifier
- Direct replacement to your original unit
- Plug-and-play, direct fit, easy installation
- Five wires, five plugs and five pins
- Maximum charging current 25 A / 300 W
- Rated from -20 degrees C to 85 degrees C
- Fixing holes 52 mm centre to centre
- Part number RM30302
Technical Specs
| Specification | Detail |
|---|---|
| Width | 48 mm |
| Length | 75 mm |
| Height | 25 mm |
| Wire length | 300 mm |
| Fixing holes, centre to centre | 52 mm |
| Number of plugs | 5 |
| Number of pins | 5 |
| Number of wires | 5 |
| Minimum charging voltage | 13V +/- 0.5V |
| Maximum charging current | 25 A / 300 W |
| Open circuit voltage | Under 15 V |
| Operating temperature | -20 degrees C to 85 degrees C |
| Part number | RM30302 |
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 |
|---|---|
| Suzuki GS 250 | 1977-1983 |
| Suzuki GS 425 | 1977-1983 |
| Suzuki GS 450 | 1977-1983 |
| Suzuki GS 550 | 1977-1983 |
| Suzuki GS 650 | 1977-1983 |
| Suzuki GSX Katana 750 | 1977-1983 |
| Suzuki GSX Katana 850 | 1977-1983 |
| Suzuki GSX Katana 1000 | 1977-1983 |
| Suzuki GSX Katana 1100 | 1977-1983 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number | Manufacturer / Brand |
|---|---|
| 32800-44010 | Suzuki |
| 32800-44030 | Suzuki |
| 32800-44040 | Suzuki |
| 32800-44120 | Suzuki |
| 32800-45110 | Suzuki |
| 32800-45210 | Suzuki |
| 32800-45240 | Suzuki |
| 32800-47020 | Suzuki |
| 32800-47120 | Suzuki |
| 32800-47121 | Suzuki |
| 32800-49030 | Suzuki |
| 32800-49140 | Suzuki |
| 32800-49310 | Suzuki |
| 32800-49X50 | Suzuki |
Frequently Asked Questions
Will this fit without modification?
Yes. This is a direct replacement for the original unit and is described by the manufacturer as plug-and-play and direct fit. The five plugs match the original connectors and the fixing holes are 52 mm apart centre to centre, matching the standard mounting. Compare the plugs and the hole spacing on your old unit before fitting.
What is included?
You receive one brand new aftermarket voltage regulator rectifier, part number RM30302, with a 300 mm wiring tail and five plugs already fitted.
How do I know my old regulator has failed?
A failed regulator rectifier usually shows up as a battery that will not hold charge, or as a charging voltage that sits outside the normal range. This unit is designed to hold a minimum charging voltage of 13V +/- 0.5V with an open circuit voltage below 15 V. A reading well under or well over that range at the battery terminals with the engine running points at the regulator.
How much charging current will it handle?
The maximum charging current is 25 A, which is 300 W. It is rated for operation between -20 degrees C and 85 degrees C, so it is suitable for year-round use.
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