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Honda CBR600F4i Magneto Stator 2001–2006 | 31120-MBW-J21
Honda CBR600F4i Magneto Stator 2001–2006 | 31120-MBW-J21
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Product Overview
Restore reliable charging and ignition performance with this magneto generator stator coil, designed for selected Honda CBR600F4i models from 2001 to 2006.
Built to replace OEM 31120-MBW-J21, this stator helps solve common electrical issues such as battery not charging, weak charging output, hard starting, unstable voltage, dim lights, and intermittent charging failure.
Made with high-quality lamination materials and copper windings, this stator is designed to provide stable electrical output, reliable charging performance, and long service life under sportbike riding conditions.
Product Compatibility
| Brand | Model | Engine / HP / CC | Year Range | Notes |
|---|---|---|---|---|
| Honda | CBR600F4i | 600cc | 2001–2006 | Verify OEM number, connector style, and stator dimensions before purchase |
| Honda | CBR600 F4i / CBR600F4i PC35 | 600cc | 2001–2006 | Match by OEM 31120-MBW-J21 and original stator layout |
OEM Cross Reference:
31120-MBW-J21
Specifications
| Specification | Details |
|---|---|
| Part Type | Magneto Generator Stator Coil |
| Configuration | 18 Pole |
| Wire Count | 3 Wires |
| Plug Count | 1 Plug |
| Pin Count | 3 Pins |
| Outer Diameter | 107 mm |
| Inner Diameter | 42 mm |
| Thickness | 24 mm |
| OEM Replacement | 31120-MBW-J21 |
| Material | High-grade lamination materials / Copper windings |
| Function | Charging and ignition system support |
| Installation | Direct replacement on correctly matched applications |
| Fitment Method | Match by OEM number, stator size, connector style, and original part layout |
| Condition | 100% New Aftermarket |
Key Features
- Honda CBR600F4i Fitment – Designed for selected 2001–2006 CBR600F4i applications
- OEM-Style Replacement – Built to replace 31120-MBW-J21
- 18-Pole / 3-Wire Design – Supports stable charging-system output
- Copper Winding Construction – Helps provide reliable electrical generation
- Direct Replacement Style – Designed for easier installation when connector and dimensions match
- Sportbike Charging Support – Helps maintain battery charging and electrical-system stability
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Fitment FAQ
Will this part fit my specific model and year?
This magneto stator is intended for Engine / HP / CC. Listed year information includes 2001–2006, 2001, 2006. It is best matched to original part number(s) 31120-MBW-J21. Key physical/spec details from the product data include Pin Count: 3 Pins, Outer Diameter: 107 mm, Inner Diameter: 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 31120-MBW-J21 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 Honda J21 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 31120-MBW-J21, treat the fitment as unconfirmed. Model years outside 2001–2006, 2001, 2006 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): 31120-MBW-J21. Recheck listed specs such as Pin Count: 3 Pins, Outer Diameter: 107 mm, Inner Diameter: 42 mm. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.