Ball Bearing 93306-205U7 – Fits Yamaha Outboard 9.9HP/15HP (Replaces 93306-205U7-00)
Ball Bearing 93306-205U7 – Fits Yamaha Outboard 9.9HP/15HP (Replaces 93306-205U7-00) is backordered and will ship as soon as it is back in stock.
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Ball Bearing 93306-205U7 – Fits Yamaha Outboard 9.9HP/15HP (Replace...
Product Details
This is a high-grade replacement Ball Bearing 93306-205U7, designed as a crankshaft connecting rod piston bearing for various Yamaha 2-Stroke outboard motors, including 9.9HP, 13.5HP, and 15HP models manufactured between 1996 and 2009. Its corrosion-resistant design ensures reliability in demanding marine environments.
This part directly replaces Yamaha OEM parts 93306-205U7-00 and 93306-205A1, and is interchangeable with Koyo 6205C3 and NSK 6205LTI / 6205LT1.
- Engineered for crankshaft and connecting rod installation.
- Constructed from high-grade bearing steel with a steel cage.
- Open, grease-lubricated design for marine applications.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 93306-205U7-00 |
| Yamaha | 93306-205A1 |
| Koyo | 6205C3 |
| NSK | 6205LTI |
| NSK | 6205LT1 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Fits a range of Yamaha 9.9HP, 15HP, and select 13.5HP 2-stroke outboard engines from approximately 1996 through 2009.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 9.9MSHW | 9.9 | 2-Stroke | 1998 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MSH | 9.9 | 2-Stroke | 2005–2009 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MLHY | 9.9 | 2-Stroke | 2000 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MSHC | 9.9 | 2-Stroke | 2004 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MSHZ | 9.9 | 2-Stroke | 2001 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9ELRV | 9.9 | 2-Stroke | 1997 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MSHU | 9.9 | 2-Stroke | 1996 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MLHV | 9.9 | 2-Stroke | 1997 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9ELHU | 9.9 | 2-Stroke | 1996 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MSHY | 9.9 | 2-Stroke | 2000 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MSHKZ | 9.9 | 2-Stroke | 2001 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MSHX | 9.9 | 2-Stroke | 1999 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9ELRU | 9.9 | 2-Stroke | 1996 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MLHU | 9.9 | 2-Stroke | 1996 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MSHA | 9.9 | 2-Stroke | 2002 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9ESHU | 9.9 | 2-Stroke | 1996 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MSHD | 9.9 | 2-Stroke | 2005 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9ESHV | 9.9 | 2-Stroke | 1997 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MLHX | 9.9 | 2-Stroke | 1999 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MSHV | 9.9 | 2-Stroke | 1997 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MLHW | 9.9 | 2-Stroke | 1998 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9ELHV | 9.9 | 2-Stroke | 1997 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 9.9MSHB | 9.9 | 2-Stroke | 2003 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MSHA | 15 | 2-Stroke | 2002 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MLHV | 15 | 2-Stroke | 1997 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MLHW | 15 | 2-Stroke | 1998 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MSHW | 15 | 2-Stroke | 1998 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MSHZ | 15 | 2-Stroke | 2001 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15ELHU | 15 | 2-Stroke | 1996 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MSHC | 15 | 2-Stroke | 2004 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MLHX | 15 | 2-Stroke | 1999 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MSHV | 15 | 2-Stroke | 1997 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MSH | 15 | 2-Stroke | 2005–2009 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MSHD | 15 | 2-Stroke | 2005 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MLHY | 15 | 2-Stroke | 2000 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MLHU | 15 | 2-Stroke | 1996 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15ELHV | 15 | 2-Stroke | 1997 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MSHKZ | 15 | 2-Stroke | 2001 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MSHU | 15 | 2-Stroke | 1996 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MSHX | 15 | 2-Stroke | 1999 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MSHY | 15 | 2-Stroke | 2000 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15ESHU | 15 | 2-Stroke | 1996 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15ELRU | 15 | 2-Stroke | 1996 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15MSHB | 15 | 2-Stroke | 2003 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 15ESHV | 15 | 2-Stroke | 1997 | 93306-205U7-00 | Crankshaft Piston |
| Yamaha | 13.5HP | 13.5 | 2-Stroke | 93306-205U7-00 | Mentioned in source but no specific models listed |
Technical Specs
- Product Type
- Deep Groove Ball Bearing
- Installation
- Crankshaft/Connecting Rod
- Bearing Type
- Single Row
- Material
- High-grade Bearing Steel
- Cage Material
- Metal (Steel)
- Lubrication
- Grease
- Precision Rating
- P6
- Sealing Type
- Open
- Structure
- Deep Groove
- Dimensions
- Inner Diameter: 25mm, Outer Diameter: 52mm, Width: 15mm
- Other Technical Attributes
- Corrosion resistant design for marine environments
What’s in the Box
- 1 x Bearing (Replaces 93306-205U7-00)
Installation Notes
- Disconnect the battery and secure the engine to prevent accidental starting.
- Access the crankshaft and connecting rod assembly by following your engine’s official service manual.
- Carefully remove the old bearing, taking note of its orientation and any associated clips or seals.
- Thoroughly clean the housing and shaft surfaces of any old grease, debris, or corrosion.
- Using an appropriate bearing press tool, gently press the new bearing into place. Avoid striking the bearing directly with a hammer.
- Reassemble all components in the reverse order of disassembly, ensuring all fasteners are torqued to the manufacturer’s specifications.
- Once assembled, manually check for smooth rotation of the crankshaft before reconnecting the battery.
Troubleshooting & FAQ
How do I know if this bearing fits my specific Yamaha model?
Check the 'Engine & Model Compatibility' table on this page. Match your engine's model number and year. This bearing is confirmed to fit a wide range of Yamaha 9.9HP and 15HP 2-stroke models from 1996 through 2009.
Is this a direct replacement for the Koyo 6205C3 bearing?
Yes, this part is a direct cross-reference for the Koyo 6205C3, as well as Yamaha 93306-205U7-00, 93306-205A1, and NSK 6205LTI / 6205LT1.
What are the signs of a failing crankshaft bearing?
Common symptoms include a persistent knocking, grinding, or rumbling noise from the engine that may change with RPM. Other signs are excessive engine vibration or the presence of fine metal shavings in the engine oil during an oil change.
How often should this crankshaft bearing be replaced?
Replacement is not based on a fixed schedule. This bearing should be inspected during any major engine service and replaced if it shows signs of wear, damage, or roughness. It is typically replaced as part of a complete engine overhaul.
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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