A brand new voltage regulator rectifier for the Honda TRX 420 Rancher, built as a direct replacement for the original unit. It is a plug-and-play, direct fit part with no assembly required, so it goes on using the existing mounting points and the existing harness plugs.
The regulator rectifier converts the alternating current produced by the stator into regulated direct current for the battery and the rest of the electrical system. This unit uses a higher grade of electrical components and an improved heat sink for better charging capability, and RMSTATOR states the quality exceeds the OEM equipment. All units are tested before they are shipped.
Key Features
- Direct replacement for the original unit - no modification required
- Plug-and-play, direct fit, no assembly required
- Higher grade of electrical components
- Improved heat sink for better charging capability
- Quality exceeds the OEM equipment
- Every unit is tested before shipping
- Rated to 50 A / 500 W maximum charging current
- Dispatched from the UK with technical fitment support
Technical Specs
| Specification |
Detail |
| SKU / Part Code |
RM30514 |
| Component |
Voltage Regulator Rectifier |
| Width |
85 mm |
| Length |
110 mm |
| Height |
40 mm |
| Fixation holes, centre to centre |
80 mm |
| Number of plugs |
2 |
| Number of pins |
5 |
| Minimum charging voltage |
14.5 V +/- 0.5 V |
| Maximum charging current |
50 A / 500 W |
| Open circuit voltage |
Under 15 V |
| Operating temperature range |
-20 C to 85 C |
| Condition |
New aftermarket |
| Warranty |
12 months |
Vehicle Fitment Guide
| Make & Model |
Years |
| Honda TRX 420 Rancher |
2007-2014 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| 31600-HP5-601 |
Honda |
Frequently Asked Questions
Will this fit without modification?
Yes. On the Honda TRX 420 Rancher between 2007 and 2014 this is a direct replacement for the original unit. It uses the same two plugs with five pins and the same 80 mm fixing hole spacing, so it mounts and connects using the existing hardware and harness. No cutting, splicing or adapters are needed.
What is included?
The voltage regulator rectifier itself. RMSTATOR does not list any additional items in the box for this part number, so plan on reusing your existing mounting bolts.
How do I tell my old regulator rectifier has failed?
Measure the battery voltage with the engine running and warm. A healthy charging system should show the regulated voltage rising towards the 14.5 V +/- 0.5 V this unit is specified to hold. A reading that stays down at battery voltage points to no charge reaching the battery, while a reading climbing well above 15 V points to a regulator that has failed open and is overcharging. Test the stator output as well before replacing anything, so you do not fit a new regulator to a fault that lies elsewhere.
Why does the heat sink matter?
A regulator rectifier gets rid of surplus charging current as heat, so its ability to shed that heat is what determines how long it lives. This unit uses an improved heat sink over the original design. Mount it where it gets airflow and keep the cooling fins clear.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
