This is a replacement ignition source coil (stator) built to OEM specifications for a range of Yamaha ATVs sharing this coil across the mid-1980s to 2000 model years. It is a complete, ready-to-fit unit engineered to match the form, fit and function of the original equipment.
The coil is a single source winding with a resistance of 320 ohms +/-20% measured Red to White, matching the electrical output of the factory-fitted stator on these applications.
Key Features
- Direct OEM fit and function - no modification required
- Coil resistance: 320 ohms +/-20% (Red to White)
- Covers Yamaha YFB 250 Timberwolf, YFM Moto-4 and YTM 225 Tri-Moto applications
- 12-month warranty as standard
Technical Specs
| Specification |
Detail |
| Resistance |
320 ohms +/-20% (Red to White) |
Vehicle Fitment Guide
| Make & Model |
Years |
| Yamaha YFB 250 Timberwolf |
1994-2000 |
| Yamaha YFM 200 Moto-4 |
1986-1989 |
| Yamaha YFM 225 Moto-4 |
1986-1988 |
| Yamaha YFM 250 Bear Tracker (incl. California) |
1999-2000 |
| Yamaha YFM 250 Moto-4 |
1989-1991 |
| Yamaha YTM 225 Tri-Moto |
1986 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| 21V-85580-20-00 |
Yamaha |
| 4BD-85510-20-00 |
Yamaha |
| 59V-85580-20-00 |
Yamaha |
Frequently Asked Questions
Will this stator fit without any modification?
Yes, this coil mounts on the original baseplate in place of the factory unit across the listed Yamaha ATV applications, with wiring connected by soldering to your existing loom.
What is included in the box?
One replacement stator coil, ready to mount to your existing baseplate.
How do I know my old stator has failed?
Common signs include no spark, a weak or intermittent spark, or the engine cutting out once warm - test the coil resistance against the value above to confirm.
Does fitting this coil require soldering?
Yes, the new coil's leads are soldered to your OEM wiring harness and insulated with heat shrink, as this coil is supplied without a moulded connector.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
