Ignition Coil – Fits Yamaha 55-90HP 2-Stroke Outboards (Replaces 697-85570-00/10)
Ignition Coil – Fits Yamaha 55-90HP 2-Stroke Outboards (Replaces 697-85570-00/10) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Ignition Coil – Fits Yamaha 55-90HP 2-Stroke Outboards (Replaces 69...
Ignition Coil – Fits Yamaha 55-90HP 2-Stroke Outboards (Replaces 697-85570-00/10) is backordered and will ship as soon as it is back in stock.
Product Details
This replacement Ignition Coil – Fits Yamaha 55-90HP 2-Stroke Outboards (Replaces 697-85570-00/10) is designed for a wide range of Yamaha 2-stroke engines from 55HP to 90HP, including CV, C, and E models manufactured between 1984 and 1994. It offers broad compatibility with multiple outboard series such as the 90ETLN, 90ETXN, CV55EL, and C55ELR, among other 2-cylinder models.
It serves as a direct cross-reference for Yamaha parts 697-85570-00-00, 697-85570-10-00, and 697-85570-11-00, as well as popular aftermarket equivalents from brands like Mercury, Sierra, and CDI Electronics.
- Bolt-on installation with direct OEM-style connections.
- High-energy output coil designed for 2-cylinder, 2-stroke marine engines.
- Engineered for use in gasoline-fueled outboard motors.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 697-85570-00-00 |
| Yamaha | 697-85570-10-00 |
| Yamaha | 697-85570-11-00 |
| Mercury | 97077M |
| Mercury | 81549M |
| Sierra | 18-5111 |
| CDI Electronics | 187-9711 |
| Quicksilver | 97077M |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This part is confirmed to fit a variety of Yamaha 2-stroke outboard models. Please verify your specific model and production year against the list to ensure correct fitment.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 90ETLN | 90 | 2-Stroke | 1984 | 697-85570-10-00 | Electric Parts 1 |
| Yamaha | 90ETXN | 90 | 2-Stroke | 1984 | 697-85570-10-00 | Electric Parts 1 |
| Yamaha | 90ETLK | 90 | 2-Stroke | 1985 | 697-85570-10-00 | Electric Parts 1 |
| Yamaha | 90ETLJ | 90 | 2-Stroke | 1986 | 697-85570-10-00 | Electric Parts |
| Yamaha | 90ETLJ-JD | 90 | 2-Stroke | 1986 | 697-85570-10-00 | Electric Parts |
| Yamaha | 90ETLH | 90 | 2-Stroke | 1987 | 697-85570-10-00 | Electric Parts |
| Yamaha | 90ETLH-JD | 90 | 2-Stroke | 1987 | 697-85570-10-00 | Electric Parts |
| Yamaha | 90ETLG | 90 | 2-Stroke | 1988 | 697-85570-10-00 | Electric Parts |
| Yamaha | 90ETLG-JD | 90 | 2-Stroke | 1988 | 697-85570-10-00 | Electric Parts |
| Yamaha | CV55ELF | 55 | 2-Stroke | 1989 | 697-85570-10-00 | Electric Parts |
| Yamaha | CV55ELD | 55 | 2-Stroke | 1990 | 697-85570-10-00 | Electric Parts |
| Yamaha | C55ELRP | 55 | 2-Stroke | 1991 | 697-85570-10-00 | Electric Parts |
| Yamaha | C (Various) | 55 | 2-Stroke | 1989–1994 | 697-85570-00-00 | Based on ARCO fitment |
| Yamaha | 50G/ETOL | 50 | 2-Stroke | 1995–2007 | 697-85570-00-00 | Newer application |
| Yamaha | 75T/L/A/C/B | 75 | 2-Stroke | 1997–2014 | 697-85570-00-00 | Newer application |
| Yamaha | 85A/E/TDL/X | 85 | 2-Stroke | 1997–2003 | 697-85570-00-00 | Newer application |
| Yamaha | 60F/T/ETOL | 60 | 2-Stroke | 1995–2007 | 697-85570-00-00 | Newer application |
| Yamaha | 70B/E/ETOL | 70 | 2-Stroke | 1995–2014 | 697-85570-00-00 | Newer application |
Technical Specs
- Product Type
- Ignition Coil Assembly
- Installation
- Bolt-On
- Fuel Type
- Gasoline
- Connection
- Direct OEM Replacement
- Housing Color
- Black
- Dimensions
- 6 × 6 × 3 inches (152.4 × 152.4 × 76.2 mm)
- Weight
- 0.09 kg (0.2 lbs)
- Fitting Type
- Direct OEM fit
- Warranty
- 1 Year (from verified aftermarket suppliers)
- Other Technical Attributes
- High-energy ignition coil for 2-cylinder 2-stroke engines
What’s in the Box
- 1 × Ignition Coil Assembly (replaces 697-85570-00-00 / 697-85570-10-00)
Installation Notes
- Disconnect the negative terminal of the battery before beginning work.
- Identify and label the spark plug wires and low-voltage electrical connectors attached to the old ignition coil.
- Carefully disconnect the wires and connectors from the coil.
- Unscrew the mounting bolts holding the coil to the engine block and remove the old unit.
- Mount the new ignition coil using the original bolts, ensuring it is secure.
- Reconnect the low-voltage electrical connectors and the spark plug wires to their correct terminals on the new coil.
- Reconnect the battery terminal, start the engine, and check for smooth operation.
Troubleshooting & FAQ
How do I know if this ignition coil fits my engine?
This coil is designed for a broad range of Yamaha 55-90HP 2-stroke outboards, primarily from 1984–1994, with some applications extending to 2014. The best way to ensure compatibility is to check the "Engine & Model Compatibility" table on this page. Cross-reference your engine's model, horsepower, and year. For final confirmation, compare the part numbers in our matrix with your existing part and visually check it against our product photos.
What are the common signs of a failing ignition coil?
Symptoms of a faulty ignition coil include difficulty starting the engine, noticeable engine misfires (especially under load), rough idling, a decrease in power and acceleration, and increased fuel consumption. In some cases, a complete failure will prevent the engine from starting at all.
Is this a direct replacement for the original Yamaha part?
Yes, this is an aftermarket part designed as a direct, bolt-on replacement. It matches the original's physical dimensions, mounting points, and electrical connections for a straightforward installation without modification.
What's the difference between part number 697-85570-00 and 697-85570-10?
Part numbers like these often indicate manufacturer revisions or supersessions over time. Both are considered interchangeable for the specified applications, and this single aftermarket coil is engineered to replace either version effectively.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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