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Voltage Regulator Rectifier for Yamaha Big Bear 350 Kodiak 400 4GB-81960-00
Voltage Regulator Rectifier for Yamaha Big Bear 350 Kodiak 400 4GB-81960-00
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Product Overview
Replace a damaged, overheated, or unstable voltage regulator rectifier with this replacement unit, designed for select Yamaha Big Bear 350, Kodiak 400, Timberwolf 250, and Moto-4 350 ATV applications using OEM reference number 4GB-81960-00.
The voltage regulator rectifier is an important part of the ATV charging system. It helps convert and regulate 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, melted connectors, or electrical system problems.
This replacement unit measures approximately 79.47mm long, 66.60mm wide, and has a 65.75mm mounting hole spacing. Please compare your original regulator’s OEM number, plug shape, wire layout, mounting hole spacing, body size, and charging system design before ordering.
Product Compatibility
| Make | Model | Year Range | OEM / Reference Number | Fitment Notes |
|---|---|---|---|---|
| Yamaha | Big Bear 350 4WD / YFM350FW | 1995–1996 | 4GB-81960-00 / 4GB-81960-00-00 | Main fitment; confirm original regulator and connector layout |
| Yamaha | Big Bear 350 4WD Special Edition / YFM350FSP | 1995 | 4GB-81960-00 | Verify plug shape, mounting distance, and body size |
| Yamaha | Big Bear 350 4WD Special Edition Hunter / YFM350FSPH | 1996 | 4GB-81960-00 | Match by OEM number and original regulator layout |
| Yamaha | Kodiak 400 4WD / YFM400FW | 1993–1995 | 4GB-81960-00 / 4GB-81960-00-00 | Main Kodiak fitment; confirm before ordering |
| Yamaha | Timberwolf 250 2WD / YFB250 | 1994–1996 | 4GB-81960-00 | Common related fitment; compare original regulator |
| Yamaha | Timberwolf 250 4WD / YFB250FW | 1994–1996 | 4GB-81960-00 | Verify connector, mounting, and charging system |
| Yamaha | Moto-4 350 / YFM350ER | 1995 | 4GB-81960-00 | Possible related fitment; check original part number |
Important Fitment Note:
This part is not selected by model name alone. Yamaha Big Bear, Kodiak, Timberwolf, and Moto-4 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 OEM 4GB-81960-00 or 4GB-81960-00-00, the plug shape, mounting hole spacing, body size, and connector layout before ordering.
Specifications
| Specification | Details |
| Product Type | Voltage Regulator Rectifier |
| Compatible Brand | Yamaha |
| Main Compatible Models | Big Bear 350, Kodiak 400, Timberwolf 250, Moto-4 350 |
| Main OEM Reference | 4GB-81960-00 |
| Hyphenated OEM Format | 4GB-81960-00-00 |
| Compact OEM Format | 4GB819600000 |
| Length | 79.47mm / 3.13" |
| Width | 66.60mm / 2.62" |
| Mounting Hole Spacing | 65.75mm / 2.59" |
| Application | ATV Charging System |
| Fitment Type | Replacement, match by OEM number, connector, and size |
Key Features
- Replacement voltage regulator rectifier for select Yamaha ATV charging systems
- Designed for matching Big Bear 350, Kodiak 400, Timberwolf 250, and Moto-4 350 applications
- Replaces Yamaha OEM reference 4GB-81960-00 / 4GB-81960-00-00
- Helps regulate charging voltage for more stable electrical output
- Helps reduce weak charging, overcharging, dim lights, battery drain, and repeated battery failure
- Built with heat-resistant, vibration-resistant, and wear-resistant materials for stable operation
- Direct replacement style, but original OEM number, plug shape, wiring layout, and mounting distance must be checked before installation
OEM Cross Reference
| OEM / Reference Number | Notes |
| 4GB-81960-00 | Main Yamaha regulator rectifier reference |
| 4GB-81960-00-00 | Full Yamaha OEM format |
| 4GB8196000 | Compact format of 4GB-81960-00 |
| 4GB819600000 | Compact format of 4GB-81960-00-00 |
Please use the OEM/reference number together with physical dimensions and connector layout for fitment confirmation. If your original regulator rectifier has a different plug shape, different wire layout, different mounting hole distance, different body size, or different charging system design, this part may not fit.
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Passform-FAQ
Passt dieses Teil zu meinem spezifischen Modell und Baujahr?
This regulator rectifier is designed for select Yamaha Big Bear 350, Kodiak 400, Timberwolf 250, and Moto-4 350 ATV applications using OEM reference number 4GB-81960-00. Common fitment includes Big Bear 350 4WD 1995–1996, Kodiak 400 4WD 1993–1995, Timberwolf 250 1994–1996, and Moto-4 350 1995 when the original regulator matches. Please compare your original part number, plug shape, body size, and mounting hole spacing before ordering.
Muss ich die OEM-Teilenummer verwenden?
Yes, matching the OEM or reference number is strongly recommended. This regulator rectifier replaces Yamaha 4GB-81960-00, 4GB-81960-00-00, and compact format 4GB819600000. However, OEM number alone is not enough. Please also confirm the connector shape, wiring layout, mounting hole spacing, body size, and charging system type.
Für welche Modelle oder Situationen passt dieser Teil nicht?
This part does not fit Yamaha Big Bear, Kodiak, Timberwolf, Moto-4, Grizzly, Warrior, Bear Tracker, or other Yamaha ATV models that use a different regulator body, different connector shape, different wiring 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.
Was sollte ich vor der Bestellung überprüfen?
Before ordering, please check your ATV make, model, year, trim version, OEM regulator number, plug shape, wire layout, mounting hole spacing, body length, width, thickness, and charging system type. For best fitment, compare the product photos and specifications with your original regulator rectifier before purchase.