Washer Plate – Fits Yamaha Outboard 50–90 HP (Replaces 90201-17M00-00)
Washer Plate – Fits Yamaha Outboard 50–90 HP (Replaces 90201-17M00-00) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Washer Plate – Fits Yamaha Outboard 50–90 HP (Replaces 90201-17M00-00)
Product Details
This replacement Washer Plate is designed for a range of Yamaha Outboard engines from 50 to 90 HP (both 2-Stroke and 4-Stroke models) manufactured between 1984 and 1989. It serves as a crucial component in mechanical assemblies, ensuring proper spacing and security.
It is a direct replacement for Yamaha part number 90201-17M00-00 (which supersedes 90201-17M25-00) and interchanges with GLM Marine 21211.
- Engineered for marine environments.
- Functions as a mechanical assembly component.
- Direct-fit replacement for specified models.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Yamaha | 90201-17M25-00 | 90201-17M00-00 |
| Yamaha | 90201-17M00-00 | |
| GLM Marine | 21211 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha owners, please verify your engine's model and production year against this list to ensure proper fitment.
| Brand | Model | Rated HP | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Yamaha | 60FE (6H2) | 60 | 1984–1986 | 90201-17M00-00 | |
| Yamaha | 60FET (6H2) | 60 | 1984–1986 | 90201-17M00-00 | |
| Yamaha | 60FEO (6H2) | 60 | 1987, 1989 | 90201-17M00-00 | |
| Yamaha | 60FETO (6H2) | 60 | 1987, 1989 | 90201-17M00-00 | |
| Yamaha | 70ETN (6H3) | 70 | 1984 | 90201-17M00-00 | |
| Yamaha | 70B (6H3) | 70 | 1985–1987, 1989 | 90201-17M00-00 | |
| Yamaha | 80A (6H0) | 80 | 1984–1989 | 90201-17M00-00 | |
| Yamaha | 90A (6H1) | 90 | 1984–1989 | 90201-17M00-00 |
Technical Specs
- Product Type
- Plate Washer
- Installation
- Mechanical assembly component
- Material
- Metal (likely steel)
- Dimensions (L x W x H)
- 8.0" x 5.0" x 0.5"
- OEM Part Number
- 90201-17M00-00
- Country of Origin
- Japan
- Warranty
- Standard OEM warranty
What’s in the Box
- 1 x Plate Washer (90201-17M00-00)
Installation Notes
- Ensure the engine is off and the battery is disconnected before starting.
- Access the component assembly where the existing washer plate is located.
- Carefully remove any fasteners and the old washer plate. Note its orientation.
- Clean the mounting surfaces of any debris, grease, or corrosion.
- Position the new washer plate correctly.
- Reinstall surrounding components and tighten all bolts to the manufacturer's recommended torque specifications.
- Once assembly is complete, reconnect the battery and check for proper operation.
Troubleshooting & FAQ
How do I know if this washer plate fits my Yamaha outboard?
This plate is designed for specific Yamaha 50-90 HP models from 1984–1989. The most reliable method is to check your engine's model number and year against the compatibility table provided. You should also visually compare the new part to your old one before installation.
What are the signs of a failing washer plate?
Signs of a worn or failed washer plate can include excessive vibration, unusual noises from the engine assembly, or improper alignment of related components. During routine maintenance, look for signs of corrosion, warping, or cracks on the plate.
Is this a direct replacement for Yamaha part 90201-17M25-00?
Yes. The OEM part number 90201-17M00-00 officially supersedes 90201-17M25-00. This aftermarket part is designed to replace both of these OEM numbers.
Can I reuse my old washer plate?
It is not recommended. Washers, especially those in critical assemblies, can fatigue, corrode, or lose their specific shape over time. For safety and performance, always use a new part when performing repairs or maintenance.
What is the function of this plate washer?
A plate washer serves several functions, including distributing load from a fastener, preventing components from loosening due to vibration, and acting as a spacer to ensure correct alignment and clearance between parts.
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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