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Ignition Coil Replacement for Yamaha 40HP 2-Stroke Outboard (66T-85570-00)
Ignition Coil Replacement for Yamaha 40HP 2-Stroke Outboard (66T-85570-00)
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Product Overview
This ignition coil replacement is designed for Yamaha 40HP 2-stroke outboard engines, providing stable high-voltage output for reliable ignition and smooth engine operation. Featuring a sealed waterproof housing and OEM-style connector, it installs easily with no wiring modifications required.
Fitment
| Brand | Engine / Model | Year Range |
|---|---|---|
| Yamaha | 40HP 2-Stroke Outboard | 1998–Newer |
| Yamaha | E40 / E40X / 40X / 40XWT | 2-Stroke |
| Yamaha | OEM Part Number | 66T-85570-00 |
Important Fitment Notice:
- Designed for Yamaha 40HP 2-stroke outboard motors
- ❌ Not for motorcycles (FZ6 / FZ1 / FZS models are not compatible)
- Please verify OEM part number, size, and connector before ordering
Specifications
| Item | Details |
|---|---|
| Product Type | Ignition Coil |
| OEM Reference | 66T-85570-00 |
| Engine Type | 2-Stroke Outboard |
| Application | Marine |
| Connector Type | OEM Plug-and-Play |
| Waterproof | Yes (Sealed Housing) |
| Installation | Direct Replacement |
| Condition | Brand New |
Key Features
- OEM-style ignition coil for Yamaha 40HP 2-stroke outboards
- Stable high-voltage output for consistent ignition performance
- Sealed waterproof design for marine environments
- Plug-and-play installation with no wiring modification
- Durable construction for long-term marine use
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Fitment FAQ
Will this part fit my specific model and year?
This ignition coil is intended for Engine / Model; Yamaha; 40HP 2-Stroke Outboard; 1998–Newer; E40 / E40X / 40X / 40XWT; 2-Stroke. It is best matched to original part number(s) 66T-85570-00. Key physical/spec details from the product data include 40HP, 66T. 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 66T-85570-00 before purchase. For this ignition coil, also compare the OEM number, plug/boot style, wire length, mounting hole distance, primary connector type, and engine ignition system. This is especially important for Yamaha E40/E40X 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 ignition coil for machines outside the listed compatibility, or for units with different plug boots, wire lengths, primary connectors, mounting-hole spacing, or ignition system types. If your original part number does not cross-reference with 66T-85570-00, treat the fitment as unconfirmed. Model years outside 1998 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, plug/boot style, wire length, mounting hole distance, primary connector type, and engine ignition system. Confirm OEM/cross-reference number(s): 66T-85570-00. Recheck listed specs such as 40HP, 66T. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.