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2016–2020 BMW G310R G310GS 18-Coil 5-Wire Stator 12311540515
2016–2020 BMW G310R G310GS 18-Coil 5-Wire Stator 12311540515
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Product Overview
Replace a weak, burned, or failed stator with this 18-coil 5-wire magneto stator, designed for select 2016–2020 BMW G310R and G310GS motorcycles using OEM reference number 12311540515.
The stator is an important part of the motorcycle charging and ignition system. It helps generate electrical power while the engine is running, supporting the battery, ignition system, lights, sensors, and other electrical components. If your BMW G310R or G310GS has weak charging, low battery voltage, dim lights, unstable electrical output, or stator-related failure, replacing the stator may help restore normal charging performance.
Built with a metal lamination core and copper windings, this replacement stator is designed for stable conductivity, heat resistance, and long service life. Please compare your original stator’s OEM number, wire count, plug layout, trigger coil position, mounting hole distance, and dimensions before ordering.
Product Compatibility
| Make | Model | Year Range | OEM Reference | Fitment Notes |
|---|---|---|---|---|
| BMW | G310R / G 310 R | 2016–2020 | 12311540515 | Main fitment; confirm original stator size and plug layout |
| BMW | G310R K03 | 2016–2020 | 12311540515 | Fits matching 18-coil 5-wire stator version only |
| BMW | G310GS / G 310 GS | 2016–2020 | 12311540515 | Compare OEM number, wire count, and dimensions before purchase |
| BMW | G310GS K02 | 2016–2020 | 12311540515 | Confirm connector layout and trigger coil position |
| BMW | 310GS / GS310 | 2016–2020 | 12311540515 | Search-name variation; verify exact BMW model before ordering |
Important Fitment Note:
This part is not selected by engine size alone. BMW G310-series motorcycles may use different charging components depending on year, market, and production version. Please confirm your original stator matches OEM 12311540515, the 18-coil / 5-wire layout, DC type, connector style, trigger coil position, and dimensions listed below.
Specifications
| Specification | Details |
| Product Type | Magneto Stator / Generator Coil |
| Coil Count | 18 Coils / 18 Poles |
| Wire Count | 5 Wire |
| Electrical Type | DC |
| Inner Diameter | 35mm / 1.4" |
| Outer Diameter | 93mm / 3.7" |
| Iron Core Height | 21mm / 0.83" |
| Mounting Hole Distance | 39mm / 1.5" |
| Thickness | 32mm / 1.3" |
| Trigger Mounting Hole Distance | 30mm / 1.2" |
| Trigger Mounting Hole Diameter | 5mm / 0.20" |
| OEM Reference | 12311540515 |
| Material | Metal Lamination Core + Copper Winding |
| Application | Motorcycle Charging / Ignition System |
| Compatible Brand | BMW |
Key Features
- Designed for select 2016–2020 BMW G310R and G310GS motorcycles
- Fits BMW G310R K03 and G310GS K02 applications using OEM 12311540515
- 18-coil 5-wire stator helps support stable charging system output
- Helps address weak charging, low battery voltage, dim lights, unstable output, or stator failure
- Copper winding supports stable conductivity and improved heat resistance
- Durable metal lamination core helps resist deformation, rust, and corrosion
- Includes trigger coil position; original OEM number, plug layout, and dimensions must be checked before installation
OEM Cross Reference
| OEM / Reference Number | Notes |
| 12311540515 | Main OEM reference for compatible BMW G310R / G310GS stator applications |
| 12 31 1 540 515 | BMW-style spaced format of the same reference number |
Please use the OEM number together with physical dimensions and connector layout for fitment confirmation. If your original stator has a different wire count, outer diameter, inner diameter, mounting hole spacing, trigger coil position, thickness, or plug style, this part may not fit.
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Fitment FAQ
Will this part fit my specific model and year?
This stator is designed for select 2016–2020 BMW G310R and G310GS motorcycles, including G310R K03 and G310GS K02 versions using OEM reference number 12311540515. Please compare your original stator’s OEM number, wire count, connector layout, inner diameter, outer diameter, mounting hole distance, trigger coil position, and thickness before ordering.
Do I need to match the OEM part number?
Yes, matching the OEM part number is strongly recommended. This stator replaces BMW OEM 12311540515, also written as 12 31 1 540 515. However, OEM number alone is not enough. Please also confirm the 18-coil 5-wire layout, plug style, inner diameter, outer diameter, mounting hole distance, trigger mounting hole distance, and trigger mounting hole diameter.
What models or situations does this part not fit?
This part does not fit BMW G310-series motorcycles that use a different stator diameter, different wire count, different connector layout, different trigger coil position, or different OEM charging system design. It is also not a replacement for the regulator rectifier, battery, ignition coil, starter motor, flywheel, or complete wiring harness.
What should I check before ordering?
Before ordering, please check your motorcycle’s make, model, year, model code, OEM part number, original stator coil count, wire count, connector shape, inner diameter, outer diameter, mounting hole distance, trigger mounting hole distance, trigger mounting hole diameter, stator thickness, and overall shape. For best fitment, compare the product photos and specifications with your original stator before purchase.