The coil plate assembly, also called the stator, is the heart of your bike charging and ignition system. It sits under the flywheel and generates the electrical current that charges the battery and fires the spark. Because pole counts and connectors differ across models, buying the wrong one is common. This guide shows you how to match it.
1. Pole count must match your flywheel
Coil plates come in 8-pole, 12-pole, and 15-pole versions, and the pole count must match the magnets in your flywheel. Fitting a 12-pole plate to a 15-pole flywheel (or the reverse) will not charge or spark correctly. Count the poles on your original plate, or read the number from the part listing.
2. Coupler pin layout
The wire harness couples to the stator through a fixed pin layout such as 3+2 or 5+1. The pin count and colour order are model-specific. A plate with the wrong coupler will not plug into your harness without rewiring, so note your pin layout before ordering.
3. Kick-start vs self-start
Kick-start and self-start (electric-start) variants often use different stator windings, because the self-start version must also supply charging current for the starter. Match the start type of your bike.
4. Source coil vs lighting coil
A coil plate contains a source coil for ignition and lighting/charging coils. If your symptoms are a weak or missing spark, the ignition source coil may have failed; if the battery will not charge, a lighting coil is more likely. Knowing which failed helps you buy the right assembly.
5. Symptoms of a failing coil plate
Typical signs are hard starting, a weak spark, dim or flickering lights, a battery that keeps going flat, and misfiring that worsens when hot. Rule out the battery, CDI, and regulator rectifier before replacing the plate.
6. Fitting tips
Photograph the wire colour order before removal, clean the flywheel face, inspect the magnets for damage, and fit a new gasket or O-ring to prevent oil seepage. Check that the plate seats flush before tightening.
Bottom line
Match the pole count, the coupler pin layout, and your bike start type, then diagnose the actual fault before buying. Those three details decide whether the plate works.
Bike Model Fitment
| Bike Model | Year | Fits |
|---|---|---|
| Hero (HF Dawn, HF Deluxe, Splendor Plus i3S, Destini, Xtreme 160R) | 2000-present | Yes |
| TVS (Max 4R, Victor GLX) | 2000-present | Yes |
| Bajaj (M80, Pulsar) | 2000-present | Yes |
| Honda (Activa) | 2000-present | Yes |
| Mahindra (Pantero, Duro, Rodeo, Flyte) | 2000-present | Yes |
| LML (Prima) | 2000-present | Yes |
Quick Mechanic Diagnostic Checklist
- Count the poles on your original coil plate (8, 12, or 15)
- Match the coupler pin layout (e.g. 3+2, 5+1)
- Confirm kick-start vs self-start type
- Note the wire colour order before removal
- Decide whether the fault is ignition (source coil) or charging (lighting coil)
- Inspect the flywheel magnets for damage
- Fit a new gasket or O-ring when refitting
Frequently Asked Questions
What is a bike coil plate assembly?
It is the stator: a ring of copper coils under the flywheel that generates the electrical current your bike uses to charge the battery and produce the spark. It is not the same as the CDI unit.
How do I choose the right pole count?
Match the pole count (8, 12, or 15) to the magnets in your flywheel. Count the poles on your original plate, or check the number in the product listing for your model.
Does kick-start vs self-start matter?
Yes. Self-start bikes need extra charging capacity for the starter, so the stator windings and coupler can differ. Match the start type of your bike.
What are the symptoms of a failed coil plate?
Hard starting, weak spark, dim lights, a battery that keeps discharging, and heat-related misfiring. Rule out the battery, CDI, and regulator rectifier first.
Are these coil plates genuine OEM?
They are OEM-spec replacements built to the original pole count, mounting, and connector layout. The listing states the exact models covered.