GOOFIT
Voltage Regulator Rectifier for Honda TRX450R Rancher Foreman CRF230L
Voltage Regulator Rectifier for Honda TRX450R Rancher Foreman CRF230L
Couldn't load pickup availability
Product Overview
Replace a damaged, overheated, or unstable voltage regulator rectifier with this 5-pin 12V replacement unit, designed for select Honda TRX450R, TRX450ER, TRX350 Rancher, TRX400FW Foreman, TRX450 Foreman, CRF230L, CRF230M, XL650V Transalp, and VT750 Shadow applications using matching regulator references such as 31600-KTB-003, 31600-HN5-671, and 31600-HN5-M40.
The voltage regulator rectifier is an important part of the charging system. It helps regulate and stabilize charging output before power reaches the battery and electrical components. A faulty regulator rectifier may cause weak charging, battery overcharging, repeated battery failure, dim lights, blown bulbs, unstable voltage, warning lights, melted connectors, or electrical system problems.
This replacement regulator rectifier features a 5-pin layout, 12V DC output, 16A current rating, 200W power rating, and 65mm mounting hole distance based on supplied product data. Please compare your original regulator’s OEM number, plug shape, pin count, wire layout, mounting hole distance, size, and charging system design before ordering.
Product Compatibility
| Make | Model | Year Range | OEM / Reference Number | Fitment Notes |
|---|---|---|---|---|
| Honda | TRX450R Sportrax 450R | 2004–2009 | 31600-KTB-003 / 31600-HN5-671 | Main sport ATV fitment; confirm original regulator and connector |
| Honda | TRX450ER Sportrax 450R | 2006–2015 | 31600-KTB-003 / related references | Verify 5-pin plug and mounting hole distance |
| Honda | CRF230L | 2008–2009 | 31600-HN5-M40 / related references | Confirm original regulator body and plug layout |
| Honda | CRF230M | 2009 | 31600-HN5-M40 / related references | Match by connector, size, and mounting points |
| Honda | XL650V / XLV650 Transalp | 2000–2007 | 31600-KTB-003 / related references | Possible motorcycle fitment; verify original part before ordering |
| Honda | TRX350 Rancher 350 FE / FM / TE / TM / ES | 2000–2006 | 31600-HN5-671 / 31600-HN5-M40 | Common ATV fitment; compare plug and regulator body |
| Honda | TRX400FW Foreman 400 | 1995–2003 | 31600-HN5-671 / related references | Verify original OEM and 5-pin layout |
| Honda | TRX450FE Foreman 450ES | 1998–2004 | 31600-HN5-671 / 31600-HN5-M40 | Fits matching Foreman 450 regulator version only |
| Honda | TRX450S Foreman 450S | 1998–2001 | 31600-HN5-671 / related references | Confirm original regulator before ordering |
| Honda | TRX450ES Foreman 450ES | 1999–2001 | 31600-HN5-671 / related references | Match by OEM number, connector, and dimensions |
| Honda | VT750C / VT750CA Shadow Aero | 2004–2009 | 31600-KTB-003 / related references | Possible motorcycle fitment; check plug and mounting style |
| Honda | VT750C2 / VT750C2F Shadow Spirit | 2007–2009 | 31600-KTB-003 / related references | Verify original regulator and connector before purchase |
Important Fitment Note:
This part is not selected by model name alone. Honda TRX, CRF, XL650V, and VT750 models may use different regulator rectifiers depending on year, market, wiring harness, connector design, and charging system setup. Please confirm your original regulator rectifier matches the 5-pin connector layout, 12V charging system, 65mm mounting hole distance, body size, and OEM/reference number before ordering.
Specifications
| Specification | Details |
| Product Type | Voltage Regulator Rectifier |
| Compatible Brand | Honda |
| Connector / Pin Count | 5 Pin |
| Voltage | 12V |
| Output Type | DC |
| Current Rating | 16A |
| Power Rating | 200W |
| Length | 86mm / 3.4" |
| Width | 64mm / 2.5" |
| Thickness | 23mm / 0.91" |
| Mounting Hole Distance | 65mm / 2.6" |
| Main OEM References | 31600-KTB-003 / 31600-HN5-671 / 31600-HN5-M40 |
| Main Compatible Platforms | Honda TRX450R, TRX350 Rancher, TRX400 / TRX450 Foreman, CRF230L, CRF230M |
| Application | ATV / Motorcycle Charging System |
| Fitment Type | Replacement, match by OEM number, connector, pin count, and size |
Key Features
- 5-pin 12V voltage regulator rectifier for select Honda ATV and motorcycle charging systems
- Designed for matching TRX450R, TRX450ER, Rancher 350, Foreman 400 / 450, CRF230L, CRF230M, XL650V, and VT750 applications
- Replaces common Honda regulator references 31600-KTB-003, 31600-HN5-671, and 31600-HN5-M40
- Helps stabilize charging output and reduce voltage fluctuation
- Helps prevent overcharging, weak charging, battery drain, dim lights, and repeated battery failure
- Compact heat-sink body supports heat dissipation during normal charging operation
- Direct replacement style, but original OEM number, plug shape, pin layout, and mounting distance must be checked before installation
OEM Cross Reference
| OEM / Reference Number | Notes |
| 31600-KTB-003 | Common Honda TRX450R / TRX450ER-style regulator rectifier reference |
| 31600KTB003 | Compact format of 31600-KTB-003 |
| 31600-HN5-671 | Common Honda Rancher / Foreman / TRX regulator rectifier reference |
| 31600HN5671 | Compact format of 31600-HN5-671 |
| 31600-HN5-M40 | Common Honda CRF230L / Rancher-style regulator rectifier reference |
| 31600HN5M40 | Compact format of 31600-HN5-M40 |
| 31600-HM7-003 | Possible related Honda Rancher / Foreman regulator reference; verify before purchase |
| 31600HM7003 | Compact format of 31600-HM7-003 |
| 31600-HM7-830 | Possible related Honda regulator reference; verify before purchase |
| 31600HM7830 | Compact format of 31600-HM7-830 |
| 31600-HN0-671 | Possible related Honda ATV regulator reference; verify before purchase |
| 31600HN0671 | Compact format of 31600-HN0-671 |
| 31600-HP6-A01 | Possible related Honda TRX regulator reference; verify before purchase |
| 31600HP6A01 | Compact format of 31600-HP6-A01 |
| 31600-KPF-961 | Possible related Honda regulator reference; verify before purchase |
| 31600KPF961 | Compact format of 31600-KPF-961 |
Please use the OEM/reference number together with physical dimensions and connector layout for fitment confirmation. If your original regulator rectifier has a different pin count, plug shape, wire layout, mounting hole distance, body size, or charging system design, this part may not fit.
Share
Fitment FAQ
Will this part fit my specific model and year?
This regulator rectifier is designed for select Honda TRX450R, TRX450ER, TRX350 Rancher, TRX400FW Foreman, TRX450 Foreman, CRF230L, CRF230M, XL650V Transalp, and VT750 Shadow applications when the original regulator matches the listed 5-pin layout and OEM references. Please compare your original part number, plug shape, pin layout, body size, and mounting hole distance before ordering.
Do I need to match the OEM part number?
Yes, matching the OEM or reference number is strongly recommended. This regulator rectifier replaces common Honda references including 31600-KTB-003, 31600-HN5-671, and 31600-HN5-M40. However, OEM number alone is not enough. Please also confirm the 5-pin connector, 12V system, plug shape, mounting hole distance, regulator body size, and charging system type.
What models or situations does this part not fit?
This part does not fit Honda TRX, CRF, XR, XL, VT, Shadow, Rancher, Foreman, or other Honda models that use a different regulator body, different pin count, different plug shape, different wire layout, different mounting distance, or different charging system design. It is also not a replacement for the stator, battery, starter relay, fuse box, ignition coil, CDI / ECU, or complete wiring harness.
What should I check before ordering?
Before ordering, please check your vehicle make, model, year, trim version, OEM regulator number, plug shape, pin count, wire layout, mounting hole distance, body length, width, thickness, and charging system type. For best fitment, compare the product photos and specifications with your original regulator rectifier before purchase.