Magneto Stator for Yamaha Timberwolf 250 & Bear Tracker | 4BD-85510-20-00

Product Overview

Get your ATV back on the trails with this premium magneto stator replacement. Specifically designed for early Yamaha Timberwolf 250 and Bear Tracker 250 models, this unit resolves common electrical failures like weak spark or poor battery charging. Engineered to withstand mud, water, and heat, it ensures your machine starts reliably every time you hit the ignition.

Product Compatibility

Brand	Model	Sub-Model / Version	Year Range
Yamaha	YFB250 Timberwolf	2WD / 4WD	1994 - 2000
Yamaha	YFM250 Bear Tracker	Standard	1999 - 2000
Yamaha	YFM250 Bear Tracker	California Edition	1999 - 2000
Yamaha	YFB250F Timberwolf	4WD Edition	1994 - 2000

Specifications

Feature	Technical Details
Outer Diameter (OD)	93mm (3.66")
Inner Diameter (ID)	34mm (1.34")
Core Thickness	13mm (0.51")
OEM Reference	4BD-85510-20-00
Material	High-purity Copper Winding + Wear-resistant Lamination

Key Features

• Direct OEM Integration: Precision-engineered as a "drop-in" replacement for part 4BD-85510-20-00, ensuring perfect alignment with factory mounting holes.
• Stable Charging Output: Delivers consistent 12V power to maintain battery health and power your ATV’s headlights and ignition system under heavy loads.
• Heavy-Duty Construction: Built with premium heat-resistant coatings to prevent internal short-circuiting caused by the high thermal cycles of air-cooled engines.
• Plug & Play Ready: Features factory-style connectors and the correct rubber grommets for a quick, watertight swap without wire splicing.
• Engineered for Off-Road: Reinforced windings and vibration-resistant materials provide a significantly longer service life than standard aftermarket units.