Plate Washer – Fits Yamaha Outboard Motors 8-15HP (Replaces 90201-14377)
Plate Washer – Fits Yamaha Outboard Motors 8-15HP (Replaces 90201-14377) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Plate Washer – Fits Yamaha Outboard Motors 8-15HP (Replaces 90201-1...
Product Details
This aftermarket Plate Washer – Fits Yamaha Outboard Motors 8-15HP (Replaces 90201-14377) is a crucial component designed for the connecting rod assembly in Yamaha 8-15HP, 2-Stroke outboard motors, specifically covering models from 1990 to 2001. Aftermarket versions feature an increased width to prevent the cracking issues found in the original design, ensuring greater durability.
It serves as a direct replacement for Yamaha part number 90201-14377-00 and is also interchangeable with Oversee Marine 90201-14377 and Topreal 90201-14377.
- Installs on the connecting rod.
- Improved aftermarket design is wider (1.7mm vs 1.2mm) for enhanced durability.
- Covered by a 1-Year Aftermarket Warranty.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 90201-14377-00 |
| Oversee Marine | 90201-14377 |
| Topreal | 90201-14377 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha engines, this part fits a range of 2-stroke models from 8HP to 15HP produced between 1990 and 2001. Please verify your specific model and year.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| Yamaha | 9.9F/FM/FEM/MHV | 9.9 | 2-Stroke | 1997 | 90201-14377-00 |
| Yamaha | 9.9FMH/MSH | 9.9 | 2-Stroke | 1994–2001 | 90201-14377-00 |
| Yamaha | 15F/FEM/FM/MH/MSH | 15 | 2-Stroke | 1994–2001 | 90201-14377-00 |
| Yamaha | 9.9/15(MH/EH)T | 9.9, 15 | 2-Stroke | 1995 | 90201-14377-00 |
| Yamaha | 9.9/15(MH/EH)U | 9.9, 15 | 2-Stroke | 1996 | 90201-14377-00 |
| Yamaha | 9.9/15MSHZ | 9.9, 15 | 2-Stroke | 2001 | 90201-14377-00 |
| Yamaha | 9.9/15MHW | 9.9, 15 | 2-Stroke | 1998 | 90201-14377-00 |
| Yamaha | 9.9/15MHX | 9.9, 15 | 2-Stroke | 1999 | 90201-14377-00 |
| Yamaha | 9.9/15MHY | 9.9, 15 | 2-Stroke | 2000 | 90201-14377-00 |
| Yamaha | 9.9D/15D | 9.9, 15 | 2-Stroke | 1990–1991 | 90201-14377-00 |
This part may also be compatible with certain Parsun, Hidea, and Seapro 2-stroke engines in the 8HP to 15HP range, as claimed by some aftermarket suppliers. Always verify the part number before ordering.
Technical Specs
- Product Type
- Plate Washer / O-ring
- Installation
- Connecting Rod
- Dimensions
- Ø18.5×Ø14×1.2mm (Original design); Improved aftermarket versions are wider (1.7mm)
- Warranty
- 1 Year (Aftermarket)
- Other Technical Attributes
- Aftermarket versions have increased width (by 0.5mm) to prevent cracking issues found in original design
What’s in the Box
- 1 x Plate Washer (90201-14377-00)
Installation Notes
- Disconnect the battery and ensure the engine is stable and cannot start accidentally.
- Access the engine's internal components by removing the necessary covers and housings. Professional service manuals are recommended.
- Locate the connecting rod assembly where the existing plate washer is situated.
- Carefully remove the old or damaged washer, taking note of its orientation and any adjacent parts.
- Clean the surfaces of the connecting rod and any related components to ensure a proper fit.
- Install the new plate washer in the correct position. Ensure it is seated flat and securely.
- Reassemble all components in the reverse order of disassembly.
- Torque all fasteners to the manufacturer's specifications.
- Once reassembled, test the engine's operation in a safe environment.
Troubleshooting & FAQ
How do I know if my plate washer needs replacement?
Common signs of a failing plate washer on a connecting rod include unusual engine noises (like knocking or rattling), increased vibration, or during a scheduled engine rebuild. Visual inspection after disassembly may reveal cracks, deformation, or excessive wear.
Is this washer compatible with 4-stroke Yamaha models?
No, this plate washer is specifically designed for the listed Yamaha 2-Stroke outboard motors from 8HP to 15HP. It is not compatible with 4-stroke models.
What is the benefit of the wider aftermarket design?
The original OEM washer has a thickness of 1.2mm. Aftermarket versions are often made 1.7mm wide to add material and strength. This increased width helps prevent the cracking that could occur with the original design under stress, leading to improved durability and engine reliability.
Can I install this part myself?
This part is located within the engine's internal connecting rod assembly. Installation requires significant mechanical skill and specialized tools. We strongly recommend professional installation by a qualified marine mechanic to ensure correct fitment and engine safety.
Will this fit my Parsun/Hidea/Seapro engine?
While some aftermarket suppliers claim compatibility with certain 8-15HP 2-stroke models from these brands, it is not universally confirmed. The only way to be certain is to match the OEM part number (90201-14377) with your engine's service manual or by comparing the old part's dimensions.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, it is 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.
Payment & Security
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