Regulator Rectifier for Kawasaki KZ and ZX Models 1981-2005
Regulator Rectifier for Kawasaki KZ and ZX Models 1981-2005
SKU:RM30004
Free shipping over £150. Terms apply
Couldn't load pickup availability
Voltage Regulator Rectifier 50A - RM30004
Kawasaki KZ 1000 and 1100, GPZ and ZX 750 and 1100 - 1981-2005
The RM30004 is a brand new voltage regulator rectifier for the big-bore air-cooled and early sports Kawasaki range, covering KZ 1000 and KZ 1100 models alongside the GPZ and ZX 750 and 1100. It is a direct replacement for the original unit - plug-and-play, direct fit and easy to install, with no assembly required. The quality exceeds the OEM equipment, the heat sink and charging capabilities are improved over the original, and a higher grade of electrical component is used throughout.
Rated at a maximum charging current of 50 A / 500 W with a minimum charging voltage of 14.5 V plus or minus 0.5 V and open circuit voltage held below 15 V, this unit is designed to keep a healthy charge going into the battery without cooking it. The body measures 80 mm by 90 mm by 28 mm with 65 mm between the fixation hole centres, and carries a single plug with five pins on five wires of 220 mm. RMSTATOR also include the opposite connector for the main harness side, because these are frequently melted, corroded or defective by the time a regulator fails and are a major cause of repetitive electrical issues. Every unit is tested before it is shipped.
Key Features
- Brand new unit, a direct replacement for the original
- Plug-and-play, direct fit, easy installation with no assembly required
- Quality that exceeds the OEM equipment
- Improved heat sink and charging capabilities
- Higher grade electrical components throughout
- Maximum charging current of 50 A / 500 W
- Minimum charging voltage of 14.5 V +/- 0.5 V
- Single plug with five pins on five 220 mm wires
- Opposite connector for the main harness side supplied with the unit
- Every unit is tested before shipping
Technical Specs
| Specification | Detail |
|---|---|
| Part number | RM30004 |
| Width | 80 mm |
| Length | 90 mm |
| Height | 28 mm |
| Wire length | 220 mm |
| Fixation holes, centre to centre | 65 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 |
| Operating temperature | -20 C to 85 C |
Vehicle Fitment Guide
The years shown are the overall model year span served by this regulator. Please confirm your own machine against the OEM part number cross reference below before ordering.
| Make & Model | Years |
|---|---|
| Kawasaki KZ 1000 | 1981-2005 |
| Kawasaki KZ 1100 | 1981-2005 |
| Kawasaki GPZ 750 | 1981-2005 |
| Kawasaki GPZ 1100 | 1981-2005 |
| Kawasaki ZX 750 | 1981-2005 |
| Kawasaki ZX 1100 | 1981-2005 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number | Manufacturer / Brand |
|---|---|
| 21066-1018 | Kawasaki |
| 21066-0798 | Kawasaki |
Frequently Asked Questions
Does this fit without modification?
Yes. It is a plug-and-play, direct fit replacement with no assembly required. The unit uses a single five-pin plug on five 220 mm wires and mounts on 65 mm hole centres, so you can check those figures against the part currently on the bike 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 harness plug on these machines is often melted, corroded or defective, and replacing the regulator without replacing a damaged plug frequently leads to the same fault returning.
How do I know my old regulator has failed?
Measure the battery voltage with the engine running. A functioning system reaches a minimum charging voltage of 14.5 V plus or minus 0.5 V and stays below roughly 15 V. No rise above resting voltage means the unit has stopped charging; a reading well above 15 V means it has stopped regulating and is overcharging the battery. Melted connector housings and a regulator that runs extremely hot are further indicators.
How does the 50 A rating compare with the original?
The RM30004 is rated at 50 A / 500 W maximum charging current and is built with an improved heat sink and a higher grade of electrical component than the OEM unit it replaces, which is intended to give it a longer service life under the same load.
Share
