Nylon Bushing – Fits Yamaha Outboard 60-300HP (Replaces 90386-18M63-00)
Nylon Bushing – Fits Yamaha Outboard 60-300HP (Replaces 90386-18M63-00) 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
Nylon Bushing – Fits Yamaha Outboard 60-300HP (Replaces 90386-18M63...
Product Details
This high-quality Nylon Bushing – Fits Yamaha Outboard 60-300HP (Replaces 90386-18M63-00) is designed for a precise fit in the power trim and tilt systems of various Yamaha 60-300HP 2-stroke and 4-stroke outboard engines. It provides superior support and reduces friction for smooth operation.
It serves as a direct replacement for Yamaha OEM part numbers 90386-18M63-00 and 90386-18M63.
- Installs within the power trim & tilt system assembly.
- Engineered with high-quality nylon for durability in marine environments.
- Designed to reduce friction and wear on mechanical components.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 90386-18M63-00 |
| Yamaha | 90386-18M63 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This bushing is confirmed to fit a wide range of Yamaha 2-stroke and 4-stroke outboard models. Always verify your OEM part number before ordering.
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| Yamaha | F80-F300 | 80-300 | 4-Stroke | 90386-18M63-00 |
| Yamaha | 60-70 | 60-70 | 2-Stroke | 90386-18M63-00 |
Technical Specs
- Product Type
- Special Nylon Bushing
- Installation
- Power Trim & Tilt System
- Housing Material
- High-Quality Nylon
- Dimensions
- 3.0" L x 3.0" W x 2.0" H
- Other Technical Attributes
- Designed for marine environments, provides superior support and reduces friction
What’s in the Box
- 1 x Bush, Spec'l Nylon (Replaces 90386-18M63-00)
Installation Notes
- Disconnect the battery terminals to prevent electrical shorts.
- Tilt the outboard up and engage the tilt lock mechanism for safety.
- Consult your service manual to identify the exact location of the worn bushing within the PTT assembly.
- Remove any retaining clips or fasteners securing the old bushing and its pin.
- Carefully extract the old, worn bushing, noting its orientation.
- Thoroughly clean the housing of any grit, salt, or corrosion.
- Press the new nylon bushing firmly into place, ensuring it is properly seated.
- Reinstall the pin and any associated hardware, torquing fasteners to the manufacturer's specification.
- Lower the engine, reconnect the battery, and test the trim/tilt system for smooth, quiet motion.
Troubleshooting & FAQ
How do I know if this bushing is worn out?
Signs of a failing bushing include excessive "slop" or movement in the tilt system, audible squeaking or grinding sounds during operation, or visible cracks and degradation of the old part.
Will this fit my specific engine year?
This part is known to fit a wide range of Yamaha 60-300HP outboards. Because year ranges can be inconsistent, the most reliable method is to match the OEM part number 90386-18M63-00 to the one specified for your engine.
What is the function of this part?
This nylon bushing acts as a pivot point and insulator within the power trim assembly, reducing metal-on-metal friction and absorbing vibration to ensure smooth and quiet operation.
Can I install this myself?
Installation is moderately complex and requires safely securing the heavy outboard motor. If you have mechanical experience and the correct tools, it is manageable. Otherwise, we recommend professional installation.
What's the difference between OEM and this aftermarket part?
This listing is an aftermarket replacement (not OEM). It has been built to meet or exceed OEM-level specifications with comparable high-grade materials. Our parts are manufactured in an ISO 9002 facility and are batch-inspected for quality and consistency.
How fast is shipping and what does it cost?
We ship worldwide quickly, with typical transit times of 5–15 days. Standard shipping is free for most orders, and expedited options will appear at checkout if available for your region.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal marine use. Should any issues arise, please contact our support team with your order details. Returns are accepted within our standard return window for unused items in their original condition. See our full 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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