Voltage Regulator Rectifier for Yamaha XT125R XT125X YBR125 125cc

Product Overview

Replace a damaged, overheated, or unstable voltage regulator rectifier with this replacement unit, designed for select Yamaha XT125R, XT125X, XTX125, XTR125, YBR125, YBR125E, and YBR125ED 125cc motorcycle applications.

The voltage regulator rectifier is an important part of the motorcycle charging system. It helps regulate charging voltage 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, or charging system problems.

This replacement regulator rectifier measures approximately 85mm long, 56mm wide, and 25mm high. Please compare your original regulator’s plug shape, pin count, wire layout, mounting style, part number, and overall size before ordering.

Product Compatibility

Make	Model	Year Range	Fitment Notes
Yamaha	XT125R	2007–2008	Common voltage regulator rectifier fitment; verify original plug and size
Yamaha	XT125X	2007–2008	Match by connector shape, pin layout, and mounting points
Yamaha	XTX125	Select applications	Verify original regulator before ordering
Yamaha	XTR125	Select applications	Confirm plug style and physical dimensions
Yamaha	YBR125	Select 2004–2016 applications	Common related fitment; match by original regulator
Yamaha	YBR125ED	2005–2006	Listed supplier fitment; confirm original part and connector
Yamaha	YBR125E / YBR125EGS / YBR125ESD	Select applications	Possible related fitment only if original regulator matches
Yamaha	XTZ125E / YB125	Select applications	Possible related fitment; verify OEM number, plug, and size

Important Fitment Note:
This part is not selected by model name alone. Yamaha XT125R, XT125X, XTX125, XTR125, YBR125, YB125, and XTZ125E models may use different electrical components depending on year, market, wiring harness, connector design, and charging system type. Please confirm your original regulator rectifier matches the plug shape, pin count, wire layout, body size, and mounting style before ordering.

Specifications

Specification	Details
Product Type	Voltage Regulator Rectifier
Compatible Brand	Yamaha
Main Compatible Models	XT125R, XT125X, XTX125, XTR125, YBR125
Voltage System	12V Motorcycle Charging System
Length	85mm / 3.3"
Width	56mm / 2.2"
Height	25mm / 0.98"
Common Regulator References	5VL-H1960-00 / 2D0-H1960-00, verify before purchase
Supplier-Listed Reference	3D9-H5540-01, verify carefully
Application	Motorcycle Charging System
Fitment Type	Replacement, match by connector, size, and wiring layout

Key Features

• Replacement voltage regulator rectifier for select Yamaha 125cc motorcycle applications
• Suitable for matching XT125R, XT125X, XTX125, XTR125, and YBR125 charging systems
• Helps regulate charging voltage for more stable electrical output
• Helps reduce weak charging, overcharging, dim lights, blown bulbs, and battery drain issues
• Compact heat-sink body helps dissipate excess heat during operation
• Designed for reliable charging system performance when the original plug and wiring match
• Direct replacement style, but original connector, pin layout, body size, and part number must be checked before installation

OEM Cross Reference

OEM / Reference Number	Notes
5VL-H1960-00	Common Yamaha voltage regulator rectifier reference for YBR125 / XT125-style applications
5VLH196000	Compact format of 5VL-H1960-00
2D0-H1960-00	Common related Yamaha voltage regulator rectifier reference
2D0H196000	Compact format of 2D0-H1960-00
3D9-H5540-01	Supplier-listed reference; often shown as a CDI / ignition unit reference, so verify before purchase
3D9H554001	Compact format of 3D9-H5540-01
3D9-H5540-00	Related supplier-listed reference; verify carefully before purchase
3D9H554000	Compact format of 3D9-H5540-00

Please use the OEM/reference number together with physical dimensions and connector layout for fitment confirmation. If your original part has a different plug shape, different pin count, different wire layout, different mounting style, or different electrical function, this part may not fit.