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Genuine Yamaha DT50 / RD50 Lighting Coil 5A3-81313-20
Genuine Yamaha DT50 / RD50 Lighting Coil 5A3-81313-20
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This is a genuine Yamaha lighting coil, a critical electrical component within the generator/stator assembly responsible for powering the vehicle's lighting system. It is highly sought after as a New Old Stock (NOS) component for maintaining the electrical integrity and original factory specifications of classic Yamaha motorcycles and mopeds.
4. Vehicle Compatibility
| Make | Model Range | Application |
| Yamaha | DT50, RD50, RD80, FS1-SE | Lighting/Electrical System |
Note: While specifically listed for the DT50, RD50, RD80, and FS1-SE (1981–1992 production range), this classic part may fit other models. Always verify your engine's stator plate configuration and part number for exact compatibility.
5. Fitment Details
This is a direct OEM replacement for the original lighting coil. During installation, ensure the stator plate is clean and free from debris or metallic filings before mounting. Verify that the wiring connections are secure, free of oxidation, and properly insulated to prevent shorts. Finally, check that the air gap between the coil and the flywheel magnets meets the service manual specifications to ensure optimal induction.
Important: Please ensure the part number matches your motorbike before purchasing. If you have any questions about the part or its compatibility, feel free to contact us. We’re here to help!
At Dmmotorcycles, we’ve specialized in vintage and vintage sports motorcycles and parts directly from Japan since 1998. We stock a wide selection of rare genuine and high-quality aftermarket parts and continually update our inventory to meet growing demand.
Looking for a specific part? Don’t hesitate to ask! We may have it in stock even if it’s not listed online. If not, we’ll do our best to source it for you.
We’re also happy to provide guidance on installation and offer excellent after-sales support to ensure your satisfaction.
Shipping Information
We ship worldwide, carefully inspecting and securely packing all parts to ensure safe delivery. Your order will be insured and shipped quickly, with the best available shipping option chosen for speed and reliability.
Please note:
- All parts are shipped from Cyprus (Europe).
- Customers outside the EU may incur additional import taxes based on the value of the item.

How we handle your order in 4 steps
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1. Order Verification
We confirm the order and make sure the correct part number, quantity, and any special requests match what’s on the sales confirmation
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2. Quality Check
Since our parts are new old stock we Inspect the parts for any defects, scratches, or missing components to ensure it meets quality standards. otherwise will notify you before proceeding with the order.
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3. Safe and Secure packaging
- Protective Wrapping: We use bubble wrap or foam padding to wrap the part, focusing on sharp edges or delicate components.
- Boxing: We place the wrapped part inside a sturdy box, filling gaps with packing materials to prevent movement.
- Sealing and Labeling: Securely tape the box and attach the shipping label, including orientation-specific markers like "Fragile."
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4. Finalizing of Shipment
We confirm the shipping address and contact details, give the package to the Post, keep the tracking number, and then send it to the customer along with the shipment notification.