Voltage Regulator Rectifier for Honda CBR 600 F4i 2001-2006 - Replaces 31600-MBW-D21
Voltage Regulator Rectifier for Honda CBR 600 F4i 2001-2006 - Replaces 31600-MBW-D21
SKU:RM30S03
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Voltage Regulator Rectifier for Honda CBR 600 F4i
Honda CBR 600 F4i, 2001-2006 - part number RM30S03
This is a brand new aftermarket voltage regulator rectifier, supplied as a direct replacement for the original unit fitted to the Honda CBR 600 F4i from 2001 to 2006. It is plug-and-play and a direct fit, so installation is easy and no assembly is required. Every unit is tested before it is shipped.
A higher grade of electrical component is used throughout, and the heat sink and charging capability are both improved over the original, so the quality exceeds the OEM equipment. The opposite connector for the main harness side is included as standard. That connector matters: on a bike of this age it is very often melted, corroded or otherwise defective, and a tired harness plug is a major cause of repeat electrical faults that outlive the regulator you have just replaced.
Key Features
- Brand new aftermarket voltage regulator rectifier
- Direct replacement to your original unit
- Plug-and-play, direct fit, easy installation
- No assembly required
- Improved heat sink and improved charging capability
- Higher grade of electrical components
- Quality exceeds the OEM equipment
- Opposite connector for the main harness side included
- All products shipped are tested
Technical Specs
| Specification | Detail |
|---|---|
| Part number | RM30S03 |
| Type | Voltage regulator rectifier |
| Length | 80 mm |
| Height | 30 mm |
| Fixation holes, centre to centre | 80 mm |
| Number of plugs | 1 |
| Number of pins | 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
| Make & Model | Years |
|---|---|
| Honda CBR 600 F4i | 2001-2006 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number | Manufacturer / Brand |
|---|---|
| 31600-MBW-D21 | Honda |
| 31600-MBW-G90 | Honda |
| 31600-MBW-A10 | Honda |
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 80 mm centre to centre and the unit has a single plug carrying four pins.
What is included?
The voltage regulator rectifier unit and the opposite connector for the main harness side, so the harness plug can be renewed at the same time as the regulator.
How do I know my old regulator has failed?
Measure the voltage across the battery with the engine running. A healthy CBR charging system holds around 14.5 V. A reading that stays down at resting battery voltage means the regulator has stopped charging, and a reading above 15 V means it has stopped regulating and is overcharging the battery. Discoloured or melted pins in the regulator plug are the other classic sign on this model.
How do I confirm this is the correct part for my F4i?
Read the number on your original unit. If it is 31600-MBW-D21, 31600-MBW-G90 or 31600-MBW-A10, RM30S03 is the correct replacement.
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