Bearing – Fits Yamaha Outboard Motors (Replaces 93306-209U1-00)
Bearing – Fits Yamaha Outboard Motors (Replaces 93306-209U1-00) 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
Bearing – Fits Yamaha Outboard Motors (Replaces 93306-209U1-00)
Product Details
This upper main Bearing – Fits Yamaha Outboard Motors including various 225hp to 250hp 76° V6 engines from 1990 and later. It is engineered as a direct-fit replacement to restore smooth engine operation and reliability.
Serves as an aftermarket replacement for Yamaha part number 93306-209U1-00.
- Installs as a direct OEM-equivalent replacement.
- Constructed from high-strength steel for durability.
- Functions as the upper main bearing in compatible engine blocks.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 93306-209U1-00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha owners, please verify your specific engine model and year falls within the compatibility range. Note that some engine series use multiple bearing types; visual confirmation against your old part is recommended.
| Brand | Model | Rated HP | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Yamaha | 225hp 76° V6 | 225 | 1994–up | 93306-209U1-00 | Upper main bearing |
| Yamaha | 250hp 76° V6 | 250 | 1990–up | 93306-209U1-00 | Upper main bearing |
Technical Specs
- Product Type
- Ball Bearing
- Installation
- Direct OEM replacement
- Housing Material
- Steel
- Dimensions
- 11.0 x 10.0 x 7.5
- Other Technical Attributes
- Upper main bearing
What’s in the Box
- 1 x Bearing (93306-209U1-00)
Installation Notes
- Disconnect the battery and ensure the engine is properly secured before beginning work.
- Refer to your specific engine's service manual to access the upper main bearing housing.
- Carefully remove the old bearing, noting its orientation and any associated seals or clips.
- Thoroughly clean the housing and crankshaft surfaces of any oil, grime, or old retaining compound.
- Using an appropriate bearing press or driver tool, gently and evenly press the new bearing into the housing until it is fully seated. Do not use a hammer directly on the bearing.
- Reassemble all engine components in the reverse order of disassembly, ensuring all bolts are torqued to the manufacturer’s specifications.
Troubleshooting & FAQ
How do I know if this is the correct upper main bearing for my Yamaha V6?
While this bearing fits a wide range of Yamaha 225-250hp 76° V6 engines, some model years use a different upper bearing. The most reliable method is to compare the part number stamped on your old bearing with 93306-209U1-00. If you are unsure, consult a professional mechanic or your service manual.
What are the signs of a failing upper main bearing?
Common symptoms include a knocking or grinding noise from the top of the engine, excessive vibration, or vertical play in the crankshaft. These signs indicate significant wear and require immediate attention to prevent catastrophic engine failure.
What is the expected lifespan of this bearing?
Under normal marine operating conditions and with proper engine maintenance (including clean oil), this bearing is designed to meet or exceed the lifespan of the original OEM part. Replacement interval is not fixed and depends on usage, maintenance, and operating environment.
Can I install this bearing myself?
This installation is complex and requires specialized tools like a bearing press and pullers, as well as a torque wrench. Due to the precision required, we strongly recommend professional installation by a qualified marine mechanic to ensure proper fitment and engine safety.
Is this an OEM part or an aftermarket equivalent?
This listing is for a high-quality aftermarket replacement, not an original equipment manufacturer (OEM) part. It is engineered to meet or exceed OEM specifications for fit, form, and function and is produced in an ISO 9001 certified facility to ensure quality and consistency.
How fast is shipping and what does it cost?
We ship worldwide, with most orders arriving in 5–15 business days. Standard shipping is free to most locations, with expedited options available at checkout for an additional cost.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter a problem, please contact our support team with your order number. We accept returns on unused items in their original packaging within our standard return period. Please see our full policy page or contact us for details.
Safety & Important Info
- Verify images and specifications against your original part before purchasing. If anything differs—even if your model appears compatible—do not install the part.
- This is an aftermarket replacement component, not an OEM part.
- Professional installation is strongly recommended for safety, proper function, and engine longevity.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world reliability.
- Fast Global Fulfillment — Enjoy free standard delivery to most regions, with typical transit times of 5–15 days.
- Manufacturer-Direct Value — By working directly with manufacturers, we offer fair pricing without compromising on materials or quality control.
Payment & Security
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