Ball Bearing 93306-304U0-00 – Fits Yamaha 9.9HP/15HP 2-Stroke Outboard Motors (Replaces 83B716-9RC3)
Ball Bearing 93306-304U0-00 – Fits Yamaha 9.9HP/15HP 2-Stroke Outboard Motors (Replaces 83B716-9RC3) is backordered and will ship as soon as it is back in stock.
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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.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Ball Bearing 93306-304U0-00 – Fits Yamaha 9.9HP/15HP 2-Stroke Outbo...
Product Details
This Ball Bearing 93306-304U0-00 is a crankshaft bottom bearing designed for specific Yamaha 2-stroke outboard motors, including older versions of the 9.9HP and 15HP series.
It serves as a direct replacement for Yamaha part numbers 93306-304U0-00 and 83B716-9RC3, and is interchangeable with Jiaiwaue 93306-304U0.
- Installs on the lower crankshaft.
- Features a press-fit connection.
- Constructed from durable steel.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 93306-304U0-00 |
| Yamaha | 83B716-9RC3 |
| Jiaiwaue | 93306-304U0 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha owners, please note this part is intended for older models. Verify your engine's part number to ensure a correct match.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Yamaha | Outboard | 9.9 | 2-Stroke | 93306-304U0-00 | Old version with code 83B716 C3 |
| Yamaha | Outboard | 15 | 2-Stroke | 93306-304U0-00 | Old version with code 83B716 C3 |
Technical Specs
- Product Type
- Crankshaft Bottom Bearing
- Installation
- Engine Lower Crankshaft
- Housing Material
- Steel
- Housing Color
- Silver/Metal
- Connection
- Press Fit
- Fitting Type
- Press Fit
- Bearing Type
- Ball Bearing
- Warranty
- 1 Year (varies by seller)
What’s in the Box
- 1 x Bearing (93306-304U0-00)
Installation Notes
- Ensure the engine is off and cool, and disconnect the battery for safety.
- Drain engine oil to prevent spills.
- Remove any components obstructing access to the engine's lower crankshaft.
- Use a professional-grade bearing puller to carefully remove the old bearing.
- Thoroughly clean the crankshaft and housing, removing any dirt, oil, or debris.
- Align the new bearing and use a bearing press or driver tool to gently press it into position until fully seated. Do not use a hammer.
- Reassemble all previously removed components in the reverse order of disassembly.
- Refill the engine oil to the manufacturer-specified level.
- Start the engine and check for smooth operation and any potential leaks.
Troubleshooting & FAQ
Will this bearing fit my specific Yamaha engine model and year?
This bearing is designed for older Yamaha 2-stroke 9.9HP and 15HP outboard motors that originally used part number 93306-304U0-00 or had the version code 83B716 C3. Since specific year ranges are not provided, it is critical to verify the part number from your engine's service manual or by inspecting the existing bearing before purchase.
What are the signs that my crankshaft bearing needs replacement?
Common signs of a failing crankshaft bearing include a rumbling or grinding noise from the engine's lower end, increased engine vibration, and the presence of metal shavings in the engine oil during an oil change.
Is this a top or bottom crankshaft bearing?
This is specifically the bottom bearing for the crankshaft.
Do I need special tools for installation?
Yes, installation requires specialized tools such as a bearing puller and a press or bearing driver to correctly remove the old bearing and install the new one without causing damage to the bearing or crankshaft.
What is the difference between part number 93306-304U0-00 and 83B716-9RC3?
93306-304U0-00 is the primary Yamaha OEM part number. 83B716-9RC3 is often used as a direct replacement or alternative part number in the aftermarket. They refer to the same part specification and are interchangeable.
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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