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Magneto Stator for Honda CB500F CB500X CBR500R (2013-2021) | OEM 31120-MGZ-J01
Magneto Stator for Honda CB500F CB500X CBR500R (2013-2021) | OEM 31120-MGZ-J01
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Product Overview
Ensure your Honda's parallel-twin engine remains powered for every adventure. This high-performance 18-pole magneto stator is a precision replacement for the Honda 500cc and 400cc series. Engineered to deliver a stable current, it supports your bike's EFI system and maintains optimal battery health, whether you're commuting or touring.
Product Compatibility
| Brand | Model | Year Range | OEM Cross-Reference |
| Honda | CB500F / ABS | 2013 - 2021 | 31120-MGZ-J01 |
| Honda | CB500X / ABS | 2013 - 2021 | 31120-MJW-J01 |
| Honda | CBR500R / ABS | 2013 - 2021 | 31120-MKP-D01 |
| Honda | CBR400R / CBR400X | 2013 - 2021 | 31120-MGZ-J01 |
Specifications
| Feature | Technical Details |
| Outer Diameter (OD) | 124mm (4.88") |
| Inner Diameter (ID) | 54mm (2.12") |
| Thickness | 25mm (0.98") |
| Coil Configuration | 18-Pole Design |
| Material | High-purity copper (Resistant to 200°C) |
Key Features
- High-Efficiency 18-Pole Design: Precision-wound to maximize magnetic induction, providing a stable 12V-14V output for sensitive EFI and ABS systems.
- Superior 200°C Thermal Resistance: Utilizes high-grade copper windings and premium insulation to prevent internal short circuits in high-heat environments.
- Optimized Heat Management: Thickened copper wire and high-grade laminations reduce internal resistance, effectively extending the lifespan of the charging system.
- Direct OEM Fitment: Matches factory dimensions (124mm OD) and mounting points exactly, ensuring a perfect seal with the included rubber grommet.
- Plug-and-Play Installation: Equipped with factory-style connectors for a hassle-free swap, requiring no wire cutting or harness modifications.
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Fitment FAQ
Will this part fit my specific model and year?
This magneto stator is intended for OEM Cross-Reference; Honda; CB500F / ABS; 2013 - 2021; 31120-MGZ-J01; CB500X / ABS. It is best matched to original part number(s) 31120-MGZ-J01, 2013-2021, 31120-MJW-J01, 31120-MKP-D01. Key physical/spec details from the product data include Outer Diameter (OD): 124mm (4.88"), Inner Diameter (ID): 54mm (2.12"), Thickness: 25mm (0.98"). 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-MGZ-J01, 2013-2021, 31120-MJW-J01, 31120-MKP-D01 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 CB500F/CB500X/CBR500R/J01 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-MGZ-J01, 2013-2021, 31120-MJW-J01, 31120-MKP-D01, treat the fitment as unconfirmed. Model years outside 2013–2021, 2013, 2021 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-MGZ-J01, 2013-2021, 31120-MJW-J01, 31120-MKP-D01. Recheck listed specs such as Outer Diameter (OD): 124mm (4.88"), Inner Diameter (ID): 54mm (2.12"), Thickness: 25mm (0.98"). If any connector, mounting point, size, or year detail is different, confirm fitment before installation.