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12-Tooth Starter Motor for Yamaha YFM660R Raptor 660 XT600 3SX-81890-00
12-Tooth Starter Motor for Yamaha YFM660R Raptor 660 XT600 3SX-81890-00
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Product Overview
Replace a worn, weak, noisy, or failed starter motor with this 12-tooth electric starter motor, designed for select Yamaha YFM660R Raptor 660, XT600, XTZ660, TT600, and related motorcycle / ATV applications using OEM reference number 3SX-81890-00-00.
The starter motor helps crank the engine when the electric start button is pressed. A failing starter motor may cause slow cranking, clicking, intermittent starting, no-crank issues, grinding noise, or failure to start even when the battery is charged.
This replacement starter motor features a 12-tooth gear and CW rotation based on supplied product data. Please compare your original starter motor’s OEM number, tooth count, rotation direction, mounting points, electrical terminal, body shape, gear position, and overall design before ordering.
Product Compatibility
| Make | Model | Year Range | OEM / Reference Number | Fitment Notes |
|---|---|---|---|---|
| Yamaha | YFM660R Raptor 660R | 2001–2005 | 3SX-81890-00-00 / 3SX818900000 | Main ATV fitment; confirm original starter gear and body shape |
| Yamaha | YFM660R Raptor 660R LE / SE | Select 2001–2005 applications | 3SX-81890-00-00 | Verify 12-tooth gear, CW rotation, and mounting layout |
| Yamaha | XT600 / XT600E | Select 1990–1995 applications | 3SX-81890-00-00 / 3TB-81800-00-00 | Common related motorcycle fitment; compare original starter before ordering |
| Yamaha | XTZ660 / XTZ 660 | Select applications | 3SX-81890-00-00 / 3AJ-81800-00-00 | Possible related fitment; verify OEM number and starter body |
| Yamaha | TT600 / TT 600 | Select applications | 3SX-81890-00-00 / 4GV-81800-00-00 | Possible related fitment only if original starter matches |
| Aprilia | Pegaso 650 | Select applications | AP8520003 | Possible cross-reference fitment; verify carefully before purchase |
| Kawasaki | ZR550 Zephyr | Select 1990–1993 applications | 21163-1150 | Possible related fitment on some aftermarket cross-reference lists; verify carefully |
Important Fitment Note:
This part is not selected by model name alone. Yamaha YFM660R, Raptor 660, XT600, XTZ660, TT600, and related applications may use different starter motors depending on year, market, engine version, gear count, rotation direction, mounting points, and electrical terminal style. Please confirm your original starter motor matches the listed OEM/reference number, 12-tooth gear, CW rotation, and overall shape before ordering.
Specifications
| Specification | Details |
| Product Type | Electric Starter Motor |
| Compatible Brand | Yamaha |
| Main Compatible ATV Model | YFM660R Raptor 660R |
| Main Compatible Motorcycle Models | XT600, XTZ660, TT600, verify before purchase |
| Tooth Count | 12 Teeth |
| Rotation Direction | CW / Clockwise |
| Main OEM Reference | 3SX-81890-00-00 |
| Compact OEM Format | 3SX818900000 |
| Related Yamaha References | 3TB-81800-00-00 / 3AJ-81800-00-00 / 4GV-81800-00-00 |
| Related Aprilia Reference | AP8520003 |
| Related Mitsuba Reference | SM13-285 |
| Common Vehicle Type | ATV / Motorcycle |
| Application | Electric Starting System |
| Fitment Type | Replacement, match by OEM number, tooth count, rotation, and mounting style |
Key Features
- 12-tooth electric starter motor for select Yamaha ATV and motorcycle applications
- Designed for matching YFM660R Raptor 660R, XT600, XTZ660, and TT600 starter systems
- Replaces Yamaha starter motor reference 3SX-81890-00-00
- Cross-references with AP8520003 and Mitsuba SM13-285 on some aftermarket listings
- Helps restore electric start function when the original starter motor is weak, worn, noisy, or failed
- Precision-built replacement style supports stable cranking performance
- Durable starter motor construction supports long service life under normal use
- Direct replacement style, but original gear count, rotation direction, terminal type, and mounting layout must be checked before installation
OEM Cross Reference
| OEM / Reference Number | Notes |
| 3SX-81890-00-00 | Main Yamaha starter motor reference |
| 3SX818900000 | Compact format of 3SX-81890-00-00 |
| 3TB-81800-00-00 | Common related Yamaha starter motor reference |
| 3TB818000000 | Compact format of 3TB-81800-00-00 |
| 3AJ-81800-00-00 | Common related Yamaha starter motor reference |
| 3AJ818000000 | Compact format of 3AJ-81800-00-00 |
| 4GV-81800-00-00 | Common related Yamaha starter motor reference |
| 4GV818000000 | Compact format of 4GV-81800-00-00 |
| AP8520003 | Aprilia cross-reference on some aftermarket listings |
| 21163-1150 | Kawasaki cross-reference on some aftermarket listings; verify carefully |
| SM13-285 | Mitsuba starter motor reference |
| SMU0212 | Common aftermarket starter motor reference |
| 410-54035 | Common aftermarket starter motor reference |
| AT-01109 | Common aftermarket starter motor reference |
| 18709 / 18760 | Common aftermarket starter references on some listings |
Please use the OEM/reference number together with physical fitment checks. If your original starter motor has a different gear tooth count, rotation direction, shaft style, mounting hole layout, electrical terminal, body shape, or mounting position, this part may not fit.
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Preguntas frecuentes sobre compatibilidad
¿Esta pieza es compatible con mi modelo y año específicos?
This starter motor is designed for select Yamaha YFM660R Raptor 660R, XT600, XTZ660, TT600, and related applications when the original starter matches the listed OEM references and 12-tooth CW design. Please compare your original starter motor’s part number, tooth count, rotation direction, body shape, mounting points, and electrical terminal before ordering.
¿Necesito que coincida el número de pieza OEM?
Yes, matching the OEM or reference number is strongly recommended. This starter motor replaces Yamaha 3SX-81890-00-00 and may cross-reference with 3TB-81800-00-00, 3AJ-81800-00-00, 4GV-81800-00-00, AP8520003, and SM13-285 on related applications. However, OEM number alone is not enough. Please also confirm the 12-tooth gear, CW rotation, mounting layout, shaft position, body shape, and terminal style.
¿Qué modelos o situaciones no son compatibles con esta pieza?
This part does not fit Yamaha YFM660, Raptor, XT, XTZ, TT, ATV, motorcycle, Aprilia, Kawasaki, or other models that use a different starter gear count, different rotation direction, different shaft length, different mounting holes, different terminal style, or different starter body. It is also not a replacement for the battery, starter relay, starter clutch, stator, ignition coil, CDI / ECU, or complete wiring harness.
¿Qué debo verificar antes de hacer un pedido?
Before ordering, please check your vehicle’s make, model, year, engine version, original starter motor OEM number, tooth count, rotation direction, mounting hole layout, electrical terminal, shaft position, starter body shape, and available installation space. For best fitment, compare the product photos and specifications with your original starter motor before purchase.