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Magneto Stator for Yamaha YZF-R1 2002–2003
Magneto Stator for Yamaha YZF-R1 2002–2003
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Product Overview
Restore reliable charging-system performance with this 18-coil, 3-wire magneto stator, designed for compatible 2002–2003 Yamaha YZF-R1 motorcycles.
The stator features an approximately 115mm outer diameter and 42mm inner diameter, providing important physical measurements for comparison with the original unit before ordering.
As a core component of the motorcycle's charging system, the stator generates AC electrical output while the engine is running. A failing stator can contribute to problems such as a battery that repeatedly loses charge, low charging voltage, inconsistent electrical performance, or uneven AC output between stator phases.
Product Compatibility
| Make | Model | Model Family | Year Range |
|---|---|---|---|
| Yamaha | YZF-R1 | YZF-R1 | 2002 |
| Yamaha | YZF-R1 | YZF-R1 | 2003 |
Specifications
| Specification | Details |
|---|---|
| Product Type | Magneto Stator / Generator Stator |
| Make | Yamaha |
| Model | YZF-R1 |
| Year Range | 2002–2003 |
| Number of Coils | 18 |
| Number of Wires | 3 |
| Stator Outer Diameter | Approx. 115 mm / 4.53 in |
| Stator Inner Diameter | Approx. 42 mm / 1.65 in |
| Electrical Application | Charging System |
| Replacement Type | Aftermarket |
| Condition | New |
Key Features
- 2002–2003 YZF-R1 Fitment: Designed for compatible Yamaha YZF-R1 motorcycle applications.
- 18-Coil Configuration: Matches compatible R1 charging-system stator designs.
- 3-Wire Output: Designed for compatible three-phase charging-system connections.
- 115mm Outer Diameter: Provides a key measurement for comparison with the original stator.
- 42mm Inner Diameter: Helps distinguish this stator from similar-looking units with different center openings.
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Fitment FAQ
Will this part fit my specific model and year?
This magneto stator is intended for Yamaha; YZF R1; 2002–2003. It is best matched to original part number(s) 2002-2003. Key physical/spec details from the product data include Inner Diameter: 42 mm, Outer Diameter: 115 mm, 42 mm. Use the compatibility table and product photos together before ordering.
Do I need to match the OEM part number?
Yes. Match your original part number to 2002-2003 before purchase. For this magneto stator, also compare the OEM number, outer/inner diameter, core height or thickness, plug shape, wire count, mounting holes, pickup position, and rubber grommet style. This is especially important for Yamaha models because similar model names can use different parts by year or trim.
What models or situations does this part not fit?
Do not order this magneto stator for machines outside the listed compatibility, or for units with different plug layouts, pickup-coil positions, wire counts, stator diameters, or charging/ignition configurations. If your original part number does not cross-reference with 2002-2003, treat the fitment as unconfirmed. Model years outside 2002–2003, 2002, 2003 should be verified separately. Do not rely only on the model name or engine size.
What should I check before ordering?
Before ordering, compare your original part with the photos and check the OEM number, outer/inner diameter, core height or thickness, plug shape, wire count, mounting holes, pickup position, and rubber grommet style. Confirm OEM/cross-reference number(s): 2002-2003. Recheck listed specs such as Inner Diameter: 42 mm, Outer Diameter: 115 mm, 42 mm. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.